Not really, it's more like the computer is flipping the coin around an axis you didn't know existed such that your flip makes no difference. Then it flips it back at the end
The Quantum computer never looks at the coin before the second flip and you never said whether you flipped it or not. The quantum coin is put through a quantum gate that says: "if the coin is tails, flip it, OTHERWISE the coin is heads, so do not flip it". The quantum coin goes through this gate and the coin is returned to you. Now.. or some time later... you decide to measure the coin and it is HEADS. You never told the quantum computer whether you flipped the coin or not, so there is no way for the quantum computer to "know" whether it was heads or tails prior to its last flip. AND you can observe the quantum computers code to see that it did not "LOOK" at the coin. It just turns out that the final observation of the coin will be HEADS so the logic gate prior to measure will just need to operate or not in order to ensure that the output is Heads. The quantum computer will have flipped it or not to make it heads even though we are all certain that it COULD NOT KNOW whether to do that at the time it went through the decision making quantum gate. The quantum coin changed from 50/50 heads/tails INTO 50% heads NOT flipped and 50% TAILS flipped. So the result will just appear to be 100% HEADS. It's like we rigged the machine to produce HEADS and when we look and see HEADS we realise that the gate must have operated in the manner required to counteract the flips we decided to do in private and without forethought or collusion. We are looking at the answer heads in the future to find that the undecided gate had actually preformed properly even though it could not possibly know exactly what to do at the time. It's magic time and space changing logic gates that works in retrospect in order to produce the reality that you now observe. Fix your reality on the idea that the computer WON and then you will find that the choices that lead to that win will have to be the ones that resulted in the computer winning. Therefore, the last flip must be correct or there is no logical path from the initial state of the coin to the final measured state of the quantum computer winning.
@@peawormsworth , your explanation is really not right. Anyone who is confused about this should read about the Bloch Sphere. The sequence of gates being used is the following: the computer does a Y/2 gate, then the gates they give you access to are X gates (these could be interchanged, they just need to be orthogonal). Normally an X gate would flip the qubit from 0 to 1 or vice versa. However, because it is aligned on the X axis by the original Y/2 gate, it does nothing to the state of the qubit. Then the computer uses a -Y/2 gate and returns the qubit to its original state
To sum up: “It’s very complicated.” “It’s so complicated that we can’t actually explain it other than stating that it’s non binary” “It’s so complicated that it can change the way the world works” “If you don’t get it, you’re beginning to understand it”
Its a scam. This "Quantum Computing" is a $$$Grant siphon that has been around for decades. They use the same talking points and simplified tech analogies as talking points to fool the unscientific liberal class and their journalists. I've never seen them offer a publication on machine coding for controlling the quantum state inputs and outputs. They show up about every 3 to four years to appeal to new audiences once the old ones forget.
@@CHAS1422 But actual viable quantum computers appeared only few years ago. If you are not satisfied with explanation for idiots, then stop watching them. Research the topic, for fuck's sakes.
@CHAS1422 You really think people decided to spend their entire lives studying quantum physics and computing as an elaborate scheme to make a modest income off of research grant money? Even one person doing that would be ridiculous, but for it to have lasted this long a large portion of the global scientific community would have to be in on it. We're talking hundreds of thousands of people working in secret, all over the globe, coordinating, falsifying documents, faking research, intimidating and getting rid of possible whistle blowers, all for what basically amounts to a public school teacher's salary.
I really like her final thought about not seeing quantum physics just as a tool to build quantum computers, but quantum computers as a tool to better understand quantum physics and the nature of the Universe.
Congrats to you both for delving deeper in your questions and statements. I mean that honestly and sincerely. Quatum Physics is like Kaos Theory (to me anyway)... The more you realize how limited everyones understanding is the more on the right path of thought flow we actually are. You do not need to understand everything to begin anything, we just need the tools and desire our brain already holds.
Josh D Yes and No. I.m.o. Cheating is a society english word we use to describe when a person alters a game to their benefit. Is that happening with the computer, yes, is the computer subject to societal norms and expectations ....? No 🧐🤔 Should we make a quantum computer a subject to the same laws, norms, and expectations? Up to us humans .... not sure there is a clear answer ....
Josh D My head is spinning new found friend. Do you not mean like 3 options? Rock, Paper, Scissors ...? So 33% 33% 33% makes almost equal 100% total? So instead of 50% chance you just lesson the odds to roughly 33% no? My head burns .... lol
She wasn't supposed to be speaking about circuits of the computer. And yes, thats how it works. The super position is the only concept that people dont understand. She was there to explain that, not the components of the computer.
@@justintimmons7613 There are loads of free textbooks and video lectures out there so that anyone can go understand it. Quantum physics and how it applies to quantum computing is not secret or protected information, It's just really hard to understand. They probably could have had a better demonstration of how qubits work but it seems like the goal of the talk was more to just show what the technology will be used for. And even if it was all about how it actually works, this video is way too short to explain it well enough to compete with IBM lmao.
@@conwaymj88 I assume the quantum computer entangles the coin at the beginning, so regardless of how many times the original coin is flipped the copied entangled version that it keeps track of will have the same value. So it can perfectly guess the value of the original coin without looking at the original coin. Though, If that is how it work's, it would have been nice for her to explain it.
@@mintysingularity thats where your getting confused, rightfully so, not explained well, it doesnt win by waiting for an answer, it can play both answers at the same time, its capable of holding mutiple answers, as opposed to binary thats only capable of 1 answer, "o" or "1," quantum can use both at the same time, and more. thats the point, she just doesnt explain it very well. its all very complex, not something that can be explained in 10 minutes i dont think. but the easiest way to compare is the binary code for "M" is 01101101 this means the computer has to use a circuit to turn on and off electricity multiple times (8 times, 8 bits) to relay the letter M through the system, quantum doesnt have to, using its super position states, it can relay all that information in 1 go, much faster binary. the short of it is, quantum is not restricted in only being able to produce 1 of 2 options as it computes. the confusing part is that its not cheating by using both answers, only one answer is used, but it still plays both answers as a "state" ...... and thats where any physicist will start to lose you, this is where it starts to get really complex....
@@JustinKrux no, I'm not confused. It's simply a very bad choice of example/comparison. Without additional information, the theoretical coin flip is always 50/50-the games rules are being broken for the sake of entertainment.
The computer won by cheating, because after it's first "flip or no flip" it did neither, it claimed it was in some "partial heads partial tails state". That's cheating.
It didn't cheat, she just didn't explain it well. The computer obviously would have used quantum entanglement. It entangles the coin with it's own copy, so no matter how many times the original coin is flipped, it can check it's own copy to determine the original's state, without looking at the original. So yes the coin is flipped, and it does have a set state at all times, the computer just doesn't care what that state is, and from the computer's perspective it's just a probability until it checks to see what it really is.
@@dirkwalker9686 This is still cheating, I think. The rules of the game are 1) no looking 2) flip it or not. Entanglement is not on the list, and it is an extraction of information. I guess the game has to be simplified so much for the audience. And for the presentation: she starts with analogue computing, then does not explain why the game was changed, then she repeats all the hype's promises / bullshit bingo that circle around (the public perception of) QC. IT security is covered and understood very well, it's just complicated, expensive and not a priority. Except the claim that real QC machines are supposed to kill all of our encryption.
@@dirkwalker9686 Obviously it cheated. It's the fact that it can cheat it's way out of a 50/50 probability is the impressive part, not that it defies maths
"If you are confused by quantum, don't worry. You are getting it." Wow, that's a really sly way of pretending you're explaining something when you aren't at all.
Open a book of quantum physics and try understanding a concept or two and you'll get what she's saying. And that's because Quantum physics or quantum computing seems to defy the common sense and experiences we come across in our daily lives. :)
Hi , future people. I knew you will come back to this classic computer to check your innovation's past. Just don't forget that we have gems called memes, preserve them, they are very precious.
Actually I did kind of get this. We know that modern computers work with bits representing 1s and 0s and combinations of them to represent data. Bits can only ever be a 1 or a 0, but never both at the same time, the same as when you flip a coin and see the result, you can't have heads and tails at the same time. With a quantum computer however, bits can be both 1 and 0 at the same time. If you understand Schrodinger's cat, it's basically the same principle, it's only when you look into the box will you see whether the cat is dead or not, but you can never know the answer until that, so you have to accept both possibilities at the same time. That's why quantum encryption is unhackable, because even if you manage to "see" the data in it's quantum form, it's kinda like you're trying to figure out whether the cat is dead or not. If you ever delve deep enough into chemistry and physics, you might have heard that, rather than orbit the nucleus like a planet in a predictable path, it's kind of impossible know where exactly an electron is, it's at every point around the nucleus at the same time whilst also not being there as well. *mind explodes*. The fact that we struggle with these mind boggling concepts and pinpoint things is precisely why the quantum computer is useful. It's bits behave the same way. That's why it's useful for chemistry, because it imitate the behaviour of atoms in the same black magic way, we can model reactions without having to worry about the infinite crazy possibilities the direction of a particle might fly off to, and then translate the important information to us in a digestible format. At least that's what I'm getting.
Yeah, well said but quantum computers aren't useful for chemistry because they make use of the same strange quantum behavior present in atoms and molecules . They are useful because quantum computers are theorized to be able to tackle problems of a computational complexity which classical computers can't solve in a reasonable amount of time. Quantum Computers offer a computational speed up with respect to classical computers which makes these complex modelling and simulation problems found in the fields of physics and chemistry feasible (at least in theory).
None of them would have an edge. An optimal strategy for both is to apply a uniformly random unitary transformation to the qubit, leaving it in a random state. When you then measure it you will get 0 or 1 with equal probability.
Quantum computer in a nutshell: - Guess the number I made - 5? - No, it's 3. I win. - But...you could change it after I said - I wouldn't need to because the number I made was in a superposition and it revealed right after your number...sorry buddy, that's quantum mechanics I hope that explanation is enough.
she left out the most important part, the explanation is smoke and mirrors: the results of the human players and the "computer" are "read into" the system and "processed" SIMULTANEOUSLY. The results of human and computer coin tosses are ENTANGLED probabilities. The probability of one coin toss IS the probability of ALL OTHER coin tosses. Quantum entanglement is the key: The change of spin of one quantum IS the exact proportionate change of spin of another entangled quantum. What you need is an array of quanta that is set up for EXACTLY this task and no other, which is no trivial task at all. This goes to show how immensely important "mystifying marketing" is for those guys and what immense budget is behind that lady speaking. I wouldn't be surprised if there were several people in the audience laughing on cue to make this presentation seem entertaining. This is not an educational presentation.
Im in IT and I love standard computers because you tell them what to do, always! Once you start letting computers think for themselves? George Orwells predictions come to mind.
They didn't even talk about what this means for specialized mathematics and storage capacities. A classical bit(Binary Digit, [0, 1]) is an characterized by a O(n^2), while a qubit(Quantum Bit) is characterized by a O(2^n). This makes seemingly enormous problems somewhat more manageable. For example: Say a classical computer the size of earth would have about the same computing power as quantum computer the size of an elephant(theoretically). They fundamentally work differently, so don't expect quantum computers to make your phone or laptop any faster, but for the scientific community that need solutions to extremely large data-set problems, or fundamentally complex can now be rapidly calculated.
From what I understand, it could also exponentially improve deep learning systems or even create a new breed of Artificial Intelligence. In apps, robotic aids or even computer games. What I also find interesting in our quantum world is the quantum entanglement bit. I imagine that it could be used for deep space travel and later on for communication between colonies in the far far future (if humanity ever gets there).
@@DeltaNovum You can't actually use entanglement to transmit information faster than light. When you measure one qubit it will be in one of the two ground states, according to a probability. This means you can't choose which state it ends up in. This means that the other entangled qubit is also in state 0 or 1 randomly, dependant on which state the first qubit collapses into. Both parties would have a randomized key which carries no information.
It's not both. They >exist< at the same time and control both results at the same time, it's more like the q-computer manipulating TWO REALITIES and choosing the reality where it wins
Great job Dr. Ghose. I love simplifying complex stuff and your explanation of such a complex topic was brilliant. Especially, the idea that it is a fluid mix and that the computer will un-mix after the user. GREAT JOB!
You know what they say... "You don't know where it is but you know how fast it's moving and you don't know how fast it's moving because you know where it is. It's just quantum physics"
Feynman : "If you think you understand quantum mechanics then you don't understand quantum mechanics"... trying to make sense of quantum physics in 10 minutes doesn't make any sense. Nothing in the quantum world makes sense anyway
Frank Maclow So wrong! Quantum physics makes all the sense there is. The only thing about it it’s defying our intuition. Check for instance just the principle of uncertainty of Heisenberg. It’s really a principle that defies our intuition but after you understand how is that possible you will come to the point where it makes all sense.
It was Bohr not Feynman. And it is a stupid sentence if taken seriously. Quantum mechanics makes complete sense but it has loopholes which, because they are difficult to manage mathematically, are left open and idled. Fortunately not all physicists are so cynical and some have proposed alternatives to Copenhagen.
@Aufenthalt Good Morning to your brain, it was Feynman. Maybe try to not spit out your opinion on something that you didnt even fucking spend 3 seconds of googling on. However, youre coming out even more stupid with your last sentence. If you meant Bohr, he was the one who worked on the Copenhagen interpretation of Quantum mechanics with Heisenberg. Thus, youre not only saying wrong things but also contradicting yourself mate.
Furthermore I do not think you can effect changes through entanglement. You can observe the entangled particle's statistics and correlate them. But no instant changes can be made after that.
Exactly. I came to the comments to see if anyone questioned the "teleportation" mentioned in the video. You cannot make changes to entangled particles. When you observe one of two entangled particles to be say, 1, the other is now instantly set to 0. Before you observer your particle, it could either be 0 or 1. Let's say when you observe your particle, it turns out to be 1. That means that the other particle is definitely the opposite: 0. As a result, you cannot use entanglement for data transfer.
@@Wiseindy Agreed :) Let me know if someone can explain how this can be used for computing. Until then I am assuming that the qbit-guys may have the wrong idea.
In my opinion, the action of 'flipping' seems to operate differently between the computer and the player. The computer's 'flip' is the Hadamard gate, and the player's flip appears to be the 'X-gate.' Regardless of whether the player decides to flip or not, applying the Hadamard gate twice will converge back to the initial state H.
Also, using quantum entanglement to transmit information FASTER than the speed of light is still science fiction. No one know if this is even possible and many believe that it is NOT possible.
So, the whole "teleportation of information" thing is a misnomer which is highly confusing for people not familiar with quantum mechanics. When 2 elementary particles, A and B, are interacted together, you can measure their sum to be 0 charge or 0 spin, which means one has +1 charge and one has -1 charge, or +1 spin and -1 spin. You don't know which of the two has what, but they never un-entangle themselves. You can separate the particles by as much distance as you'd like, and separately observe them to be +1 and -1, but A cannot be locally affected by B faster than the speed of light. If you only observe A, then B will collapse into the opposite state for as long as you observe A. Once you stop observing A, both A and B become randomized again until you observe them, at which time they can again be +1 or -1, randomly. This is called a non-local effect, because A and B effect each other regardless of separation in spacetime. But anything that A does (say, an electron making a magnetic field) that can travel to B's location and then affect B does not happen faster than the speed of light. In essence, that means this is useless for teleportation of information. Hope I wasn't too confusing...
@Matthew Garrett I have a few questions. Why can the particles A and B as you called them not travel faster than the speed of light? And how because of this does it mean that it's useless for teleporting or transmitting the information?
Faz Naz123; the instantaneous collapse of the distant entangled partner particle does not transmit information. One gets one spin and the other gets the opposite. The angle was pre decided and traveled with the particles at the speed those objects can travel which is less than "c".
@@faznaz7455 You can already teleport information with the speed of light. That invention is called "the radio". Has some fancy implementations too like the cell phone, TV and sattelite communication.
When you show up to the first day of class and the professor expects that you already read and understood the first chapter then quickly summarizes the second chapter to start class discussion.
The reason why the quantum computer had that high winning rate is because the game was played in its world. Secondly, it has full control over its world and knows how to get what it wants with what it has. Hence, it will always win any game it plays. That is one major problem of humanity. Lack of absolute control over our world due to very high uncertainty about the future. That is why we plan but may still not achieve the desired target due to unforeseen circumstances. This technology has so much potential!!!
"I have access to a 5 Qubit computer, but I used it to run a coin flipping game for which I knew the result." Oh and I gathered participant data that I knew meant nothing...
I have a task for a quantum computer. The monitor can display the entire universe, we can look at other civilizations, and I have the task, find all the images combined into one. In this film we see each other and maybe we are ashamed of our stupidity.
as a computer science graduate who's weak in physics and being forced to learn about quantum computing, having to watch this in hopes of getting any understanding at all was .... well like playing coin flipping with a quantum computer... hardly any chance for me to get something out of it. And the comment section is more satisfying than the video.
Do not waste time on this. The coin flip game is a bad and wrong way to explain QC. I do not like the Schrödinger cat either but it makes more sense than this.
@@boulevarda.aladetoyinbo4773 No she did not. She said the computer can chose to flip the coin or not. But the computer does not do that. It puts the coin in a state where the humans choice will not matter and then it will just put the coin out of that state and it will be heads again. See source code here: github.com/MackEdweise/TEDxCoinToss
For what I've understand the game just gives emphasis on the super-position. So in the first flip it doesn't let go any of the two outcomes, rather hold on to both of them via superposition. Since the computer kept that in super-postion the players choice will also be in superposition. And in the last move computer just boosts the head probability so the computer wins
Very nice indeed. The computer does not tell you what happens in between. But it makes sure to display the final result to be heads. I could design such a computer without the super conductors that ibm use :-)
I've watched a lot of introductory videos about quantum computing, and even took courses for it, but no one explained the basics the way she did. It was so amazing to watch this TED talk!
I just watched a video about how entanglement couldn’t be used to send information faster than light because you don’t realize it’s entanglement and not just a particle collapsing without being in contact with the other person who’s observing the entangled particle
I love the fact that we are creating something super intelligent on a quantum scale!! Wait! "intelligent on a quantum scale + AI on a quantum scale" UH OH!!!!!!
No it doesn't check...but actually never changes. Basically it stays in partial head and partial tail. But at the end transforms too completely head which is the condition of the game for the computer to win.
The theoretical coin flip game was not explained in any manner that helped me in the least. WHY was the ability to work with uncertainty helping the process to predict? How could it be flawless (ie, 100% win, excluding computer errors)?
I do realize that quantum computers can do amazing things, but winning that game - that was cheating. It changed the rules so it would always be able to win.
well i didnt understand how this works, is it only me or anyone of you did ? like i knew this stuff happen in the quantum world but why do they happen and how are you useing them ? + the video isnt explaining quantum computing its demonstrateing how it can be used if thats the right word lol o well
So if I understand this correctly (which I very well may not), in a game of chance where the rules are determined by laws we understand and can observe, a machine with quantum properties can manipulate the variable outcome by deconstructing and then reconstructing the matter upon which the variable relies to produce a definitive result? Basically what I'm asking is in a game of quarter toss, does the quantum computer dismantle and then reassemble the quarter so that it's always facing up?
I don’t think that the explanation was clear but the speaker had very little time. For those who didn’t get it (like me) let’s represent head and tails as “state” vectors: |H>=(1,0) and |T>=(0, 1). In quantum mechanics a vector with norm 1 represents a physical state (wavefunction), for example (1/sqrt(2), 1/sqrt(2)) is the state where you have a fifty-fifty possibility of getting head or tails if you look at the coin. At the beginning the computer receives head (1 0) and returns the superposition (1/sqrt2, 1/sqrt2) : whatever the human does flipping this state won’t do anything. The first computer move was the same as applying the square 2x2 matrix [ (1/sqrt2, 1/sqrt2) ; (1/sqrt2, -1/sqrt2) ]. Applying it again to the state (1/sqrt2, 1/sqrt2) the human returned gives head (1,0). So yeah, the computer didn’t flip the coin. It used an operation that would make no sense for a classical computer since the only classical states are (1,0),(0,1) ; that is, head and tails. The “magic” is the fact that the quantum computer is certain to win whatever you do without ever looking at the coin! A classical computer could also always win but it has to look at the coin and choose whether to flip it or not.
People after 50 years since Quantum Computer becomes normality: I can't wait for another mind boggling branch of science to be found that make already boring Quantum physics extremely exciting.
Getting into quantum physics is, I believe, the closest natural beings can get to the supernatural realm. Its crazy. And considering where our world is today, while it is great technology, it is all the more dangerous.
Amazing, quantas themselves , defined as particles sometimes defined as wave, their mass is zero, another time their mass can be calculated, really strange, when we step out of classic physics, the idea of uncertainty is more and more clear
From 9:16 to 9:56 the words hit in my hearth and give burst of ignition in nerves! Yes The Universe is amazing and beyond our imagination. Informations, secrets are openly hiding but we can't access it for our limitations. Hopefully the more we make our brain active the more we get the existence of creativity to unlock the mysteries of Universe!
if the hackers break the laws of quantum physics in order to break the human laws, do they go to jail or go get a nobel prize, or both ?
We won't know until the end because they'll be in a superposition of states.
Well, in one universe they go to jail, in another they win a nobel prize.
phoenixamaranth
I busted out laughing when I read that. My dog nearly jumped out of her skin.
i'd say both.
Until observed lol
So basically the quantum computer waits until the user plays and just always picks the outcome where the computer wins? Yeah, sound like Vegas.
Sounds like CHEATING
Yes
Not really, it's more like the computer is flipping the coin around an axis you didn't know existed such that your flip makes no difference. Then it flips it back at the end
The Quantum computer never looks at the coin before the second flip and you never said whether you flipped it or not. The quantum coin is put through a quantum gate that says: "if the coin is tails, flip it, OTHERWISE the coin is heads, so do not flip it". The quantum coin goes through this gate and the coin is returned to you. Now.. or some time later... you decide to measure the coin and it is HEADS. You never told the quantum computer whether you flipped the coin or not, so there is no way for the quantum computer to "know" whether it was heads or tails prior to its last flip. AND you can observe the quantum computers code to see that it did not "LOOK" at the coin. It just turns out that the final observation of the coin will be HEADS so the logic gate prior to measure will just need to operate or not in order to ensure that the output is Heads. The quantum computer will have flipped it or not to make it heads even though we are all certain that it COULD NOT KNOW whether to do that at the time it went through the decision making quantum gate.
The quantum coin changed from 50/50 heads/tails INTO 50% heads NOT flipped and 50% TAILS flipped. So the result will just appear to be 100% HEADS. It's like we rigged the machine to produce HEADS and when we look and see HEADS we realise that the gate must have operated in the manner required to counteract the flips we decided to do in private and without forethought or collusion. We are looking at the answer heads in the future to find that the undecided gate had actually preformed properly even though it could not possibly know exactly what to do at the time.
It's magic time and space changing logic gates that works in retrospect in order to produce the reality that you now observe. Fix your reality on the idea that the computer WON and then you will find that the choices that lead to that win will have to be the ones that resulted in the computer winning. Therefore, the last flip must be correct or there is no logical path from the initial state of the coin to the final measured state of the quantum computer winning.
@@peawormsworth , your explanation is really not right. Anyone who is confused about this should read about the Bloch Sphere. The sequence of gates being used is the following: the computer does a Y/2 gate, then the gates they give you access to are X gates (these could be interchanged, they just need to be orthogonal). Normally an X gate would flip the qubit from 0 to 1 or vice versa. However, because it is aligned on the X axis by the original Y/2 gate, it does nothing to the state of the qubit. Then the computer uses a -Y/2 gate and returns the qubit to its original state
To sum up:
“It’s very complicated.”
“It’s so complicated that we can’t actually explain it other than stating that it’s non binary”
“It’s so complicated that it can change the way the world works”
“If you don’t get it, you’re beginning to understand it”
Its a scam. This "Quantum Computing" is a $$$Grant siphon that has been around for decades. They use the same talking points and simplified tech analogies as talking points to fool the unscientific liberal class and their journalists. I've never seen them offer a publication on machine coding for controlling the quantum state inputs and outputs. They show up about every 3 to four years to appeal to new audiences once the old ones forget.
@@CHAS1422 But actual viable quantum computers appeared only few years ago.
If you are not satisfied with explanation for idiots, then stop watching them. Research the topic, for fuck's sakes.
@CHAS1422 You really think people decided to spend their entire lives studying quantum physics and computing as an elaborate scheme to make a modest income off of research grant money? Even one person doing that would be ridiculous, but for it to have lasted this long a large portion of the global scientific community would have to be in on it. We're talking hundreds of thousands of people working in secret, all over the globe, coordinating, falsifying documents, faking research, intimidating and getting rid of possible whistle blowers, all for what basically amounts to a public school teacher's salary.
Non-binary? *SJW intensifies
@CHAS1422 you might want to get yourself checked. Maybe quantum computing will be able to find a remedy for your illness
"the future is fundamentally uncertain but certainly exciting "...WOW!
Whhoow
@@shashin320qà
From when this video was made the future is Covid. Being trapped in your house for a year not so exciting.
@@malice112 bruh
For me The Fundamental Uncertainty of the Future is Scary.
I really like her final thought about not seeing quantum physics just as a tool to build quantum computers, but quantum computers as a tool to better understand quantum physics and the nature of the Universe.
I must have missed the bit where she explained how quantum computing works :-(
exactly - there was only a brief overview of stuff I already knew. Probability of 0's and 1's - and allowing for uncertainty of that. Meh give me more
Seenyer Toenayls Huh?
Excellent, she was banging on about a coin game and I was like wtf
Checkout veritasiums video on this.
Did you miss the part where she tells you that she is a qualified quantum physicist three times though? If not I am sure she will tell you again.
Quantum computing NOT explained in 10 minutes
Congrats to you both for delving deeper in your questions and statements. I mean that honestly and sincerely. Quatum Physics is like Kaos Theory (to me anyway)... The more you realize how limited everyones understanding is the more on the right path of thought flow we actually are. You do not need to understand everything to begin anything, we just need the tools and desire our brain already holds.
Josh D Yes and No. I.m.o. Cheating is a society english word we use to describe when a person alters a game to their benefit. Is that happening with the computer, yes, is the computer subject to societal norms and expectations ....? No 🧐🤔 Should we make a quantum computer a subject to the same laws, norms, and expectations? Up to us humans .... not sure there is a clear answer ....
Josh D Hahahahhaha 😂😂😂
Josh D My head is spinning new found friend. Do you not mean like 3 options? Rock, Paper, Scissors ...? So 33% 33% 33% makes almost equal 100% total? So instead of 50% chance you just lesson the odds to roughly 33% no? My head burns .... lol
Josh D Which is why the Quantum Computer wins almost everytime .... yes yes .... 🤓
User: Hey computer what's 2+2?
Quantum Comp: wouldn't you like to know..
Rizky C weather boy
XavierDraws 😂😂😂
human boy
Hooman boy
The coin-flipping thing told me absolutely nothing about how quantum computers work
That's what I was looking for. She just talked about applications.
She wasn't supposed to be speaking about circuits of the computer. And yes, thats how it works. The super position is the only concept that people dont understand. She was there to explain that, not the components of the computer.
It’s explained in this this video using the cat in box thought experience. th-cam.com/video/kTXTPe3wahc/w-d-xo.html
They don’t want you to understand how it works because then their secretive trillion-dollar technology is worthless if regular people understand it.
@@justintimmons7613 There are loads of free textbooks and video lectures out there so that anyone can go understand it. Quantum physics and how it applies to quantum computing is not secret or protected information, It's just really hard to understand. They probably could have had a better demonstration of how qubits work but it seems like the goal of the talk was more to just show what the technology will be used for. And even if it was all about how it actually works, this video is way too short to explain it well enough to compete with IBM lmao.
It must be a superposition of an explanation and a non-explanation
Idk I'm not sure
Haha, you got a laugh out of me
this doesn't explain much about how it works at all.
It only explains how to cheat in a sophisticated way
@@conwaymj88 I assume the quantum computer entangles the coin at the beginning, so regardless of how many times the original coin is flipped the copied entangled version that it keeps track of will have the same value. So it can perfectly guess the value of the original coin without looking at the original coin. Though, If that is how it work's, it would have been nice for her to explain it.
@@dirkwalker9686 but that contradicts the games rules, in that the state of the coin after the player's turn is not revealed to the computer.
@@mintysingularity thats where your getting confused, rightfully so, not explained well, it doesnt win by waiting for an answer, it can play both answers at the same time, its capable of holding mutiple answers, as opposed to binary thats only capable of 1 answer, "o" or "1," quantum can use both at the same time, and more. thats the point, she just doesnt explain it very well.
its all very complex, not something that can be explained in 10 minutes i dont think. but the easiest way to compare is the binary code for "M" is 01101101 this means the computer has to use a circuit to turn on and off electricity multiple times (8 times, 8 bits) to relay the letter M through the system, quantum doesnt have to, using its super position states, it can relay all that information in 1 go, much faster binary.
the short of it is, quantum is not restricted in only being able to produce 1 of 2 options as it computes. the confusing part is that its not cheating by using both answers, only one answer is used, but it still plays both answers as a "state" ...... and thats where any physicist will start to lose you, this is where it starts to get really complex....
@@JustinKrux no, I'm not confused. It's simply a very bad choice of example/comparison. Without additional information, the theoretical coin flip is always 50/50-the games rules are being broken for the sake of entertainment.
The computer won by cheating, because after it's first "flip or no flip" it did neither, it claimed it was in some "partial heads partial tails state". That's cheating.
Exactly! So y is every1 like 'wow' That's so brilliant?!? It's simple - ur right it's cheating!
I think the same...
It didn't cheat, she just didn't explain it well. The computer obviously would have used quantum entanglement. It entangles the coin with it's own copy, so no matter how many times the original coin is flipped, it can check it's own copy to determine the original's state, without looking at the original. So yes the coin is flipped, and it does have a set state at all times, the computer just doesn't care what that state is, and from the computer's perspective it's just a probability until it checks to see what it really is.
@@dirkwalker9686 This is still cheating, I think. The rules of the game are 1) no looking 2) flip it or not. Entanglement is not on the list, and it is an extraction of information. I guess the game has to be simplified so much for the audience.
And for the presentation: she starts with analogue computing, then does not explain why the game was changed, then she repeats all the hype's promises / bullshit bingo that circle around (the public perception of) QC. IT security is covered and understood very well, it's just complicated, expensive and not a priority. Except the claim that real QC machines are supposed to kill all of our encryption.
@@dirkwalker9686 Obviously it cheated. It's the fact that it can cheat it's way out of a 50/50 probability is the impressive part, not that it defies maths
"If you are confused by quantum, don't worry. You are getting it." Wow, that's a really sly way of pretending you're explaining something when you aren't at all.
"I think I can safely say that nobody understands quantum mechanics." -Richard Feynman, often considered the father of modern quantum mechanics.
Or it's a joke, because of the particle dualism.
So when you are getting it, you are not getting it?
Open a book of quantum physics and try understanding a concept or two and you'll get what she's saying. And that's because Quantum physics or quantum computing seems to defy the common sense and experiences we come across in our daily lives. :)
Maybe she could have phrased it better, but it didn't take away from the content. Let's see you do better on stage...
One thing I can say the video did try to tell the basic principal on which quantum computing is based on and it's use
Hi , future people.
I knew you will come back to this classic computer to check your innovation's past.
Just don't forget that we have gems called memes, preserve them, they are very precious.
😂🔥
Actually I did kind of get this. We know that modern computers work with bits representing 1s and 0s and combinations of them to represent data. Bits can only ever be a 1 or a 0, but never both at the same time, the same as when you flip a coin and see the result, you can't have heads and tails at the same time. With a quantum computer however, bits can be both 1 and 0 at the same time. If you understand Schrodinger's cat, it's basically the same principle, it's only when you look into the box will you see whether the cat is dead or not, but you can never know the answer until that, so you have to accept both possibilities at the same time. That's why quantum encryption is unhackable, because even if you manage to "see" the data in it's quantum form, it's kinda like you're trying to figure out whether the cat is dead or not.
If you ever delve deep enough into chemistry and physics, you might have heard that, rather than orbit the nucleus like a planet in a predictable path, it's kind of impossible know where exactly an electron is, it's at every point around the nucleus at the same time whilst also not being there as well. *mind explodes*.
The fact that we struggle with these mind boggling concepts and pinpoint things is precisely why the quantum computer is useful. It's bits behave the same way. That's why it's useful for chemistry, because it imitate the behaviour of atoms in the same black magic way, we can model reactions without having to worry about the infinite crazy possibilities the direction of a particle might fly off to, and then translate the important information to us in a digestible format.
At least that's what I'm getting.
Woahhh this helped a lot. Thank you so much!
This was crazy helpful and intuitive
Whoa, wow, so, what is bitcoin?
This was put across really well,my friend 🙌
Yeah, well said but quantum computers aren't useful for chemistry because they make use of the same strange quantum behavior present in atoms and molecules . They are useful because quantum computers are theorized to be able to tackle problems of a computational complexity which classical computers can't solve in a reasonable amount of time. Quantum Computers offer a computational speed up with respect to classical computers which makes these complex modelling and simulation problems found in the fields of physics and chemistry feasible (at least in theory).
Thanks for making that quick. I can now relax in a quantum of solace.
I thought you said thanks for making me sick.... ..and I related to that
BOOM.
With that delivery, I bet you think you're James Bond now don't chu?
lol
wrg,relaxed nmw
Amitab bachan in the movie sholay had the quantum physics coin.
😂😂
Bhai bhai....
Bahut hard
Mara Mara sathi!!
🤣🤣😂😂
There is no spoon. You meant a fork. No, it's a spork.
it's a fpoon
Lol😂
Person: "Excuse me, sir"
Quantum computer: "It's MA'AM!"
No it's mam-Mal
Not it’s not it’s... ma’am
IM NON-BINARY GOTTAMIT!
@@aaronprimus1300 Ha! That works in more ways than one 😂
Wow. Even after 2 years of this talk being on net, I was amazed to think what future has in store for us. Very good Ms Ghose
Finally, I can slap someone through the internet
or stick a fried chicken drumstick up someone's booty
First, you should slap some allien cheeks
@@engrmuhammadwaqas5225 clap*
That was supposed to be a joke😂 do I have to tell you that I am going to joke Lmao
😂😂
The real question is can it run minecraft with shaders?
Unfortunately no. Even the most intelligent computer ever built would take seven an a half million years to achieve such a goal.
It could run Minecraft Java with Shaders, mods on a server. The endless Power
@@aracraft4422 yea maybe if you blow on it every 5 seconds I'm not sure
@@kareem4333 In any case 20 TNT and it's a crash ^^
The answer to that is maybe.
TLDR It just works
3/10 Your obsession with this meme will be your undoing.
Fu*k u
97% of the time, it works every time!
I thought you only comment jojokes
- Jensen Huang
WHAT WOULD HAPPEN IF TWO QUANTUM COMPUTER PLAYED THIS GAME WITH EACH OTHER, WHO WILL WIN ASSUMING BOTH HAVING SAME PROCESSING SPEED🤔
None of them would have an edge. An optimal strategy for both is to apply a uniformly random unitary transformation to the qubit, leaving it in a random state. When you then measure it you will get 0 or 1 with equal probability.
The one with more number of boundaries
The one who will have the last turn.
The one that doesn’t fail, it’s uncertain that they will work at their best, so the one that falls behind will lose
The Computer which gets to play the last time, will most probably win
That make no sense. You are flipping a coin but the computer is flipping a sphere. You are not playing the same game.
haha , true in a sense
lol😂😂
Anything can happen in 2020... Even computer plays unfair game..
Quantum computer in a nutshell:
- Guess the number I made
- 5?
- No, it's 3. I win.
- But...you could change it after I said
- I wouldn't need to because the number I made was in a superposition and it revealed right after your number...sorry buddy, that's quantum mechanics
I hope that explanation is enough.
haha....best!
But by looking at the number you changed the out come !
Asim Khan computer says “no” )))
@@GoldenMoments100 Would love to see you on TH-cam discussing this!
she left out the most important part, the explanation is smoke and mirrors: the results of the human players and the "computer" are "read into" the system and "processed" SIMULTANEOUSLY. The results of human and computer coin tosses are ENTANGLED probabilities. The probability of one coin toss IS the probability of ALL OTHER coin tosses. Quantum entanglement is the key: The change of spin of one quantum IS the exact proportionate change of spin of another entangled quantum. What you need is an array of quanta that is set up for EXACTLY this task and no other, which is no trivial task at all. This goes to show how immensely important "mystifying marketing" is for those guys and what immense budget is behind that lady speaking. I wouldn't be surprised if there were several people in the audience laughing on cue to make this presentation seem entertaining. This is not an educational presentation.
ME: Hey, Quantum computer: This statement is false. Think about that.
QC: Your statement is tralse.
ME: Damn you, wretched quantum machine!
Im in IT and I love standard computers because you tell them what to do, always! Once you start letting computers think for themselves? George Orwells predictions come to mind.
Hello. This TH-cam channel is the best thing since sliced bred! Take care! 🎉
They didn't even talk about what this means for specialized mathematics and storage capacities. A classical bit(Binary Digit, [0, 1]) is an characterized by a O(n^2), while a qubit(Quantum Bit) is characterized by a O(2^n). This makes seemingly enormous problems somewhat more manageable. For example: Say a classical computer the size of earth would have about the same computing power as quantum computer the size of an elephant(theoretically).
They fundamentally work differently, so don't expect quantum computers to make your phone or laptop any faster, but for the scientific community that need solutions to extremely large data-set problems, or fundamentally complex can now be rapidly calculated.
I'll take some realtime physics for jiggly boobs. Thank you!
Haden Snodgrass I don’t think she would have explained it as well as you did x
From what I understand, it could also exponentially improve deep learning systems or even create a new breed of Artificial Intelligence. In apps, robotic aids or even computer games. What I also find interesting in our quantum world is the quantum entanglement bit. I imagine that it could be used for deep space travel and later on for communication between colonies in the far far future (if humanity ever gets there).
@@DeltaNovum You can't actually use entanglement to transmit information faster than light. When you measure one qubit it will be in one of the two ground states, according to a probability. This means you can't choose which state it ends up in. This means that the other entangled qubit is also in state 0 or 1 randomly, dependant on which state the first qubit collapses into. Both parties would have a randomized key which carries no information.
Why do u spread misinformation? When qc will have enough qbits they will be way faster than regular ones in every way
Is it heads or tails?
Quantum Computer: Both
Such philosophy. So science.
Answer: ALL OF THE ABOVE, and sometimes it's the edge too.
is this joke about schrodinger cat?
another cheating device in making...
It's not both. They >exist< at the same time and control both results at the same time, it's more like the q-computer manipulating TWO REALITIES and choosing the reality where it wins
Thank you for destroying what little understanding I thought I had before seeing this video
😂😂😂
You're learning it
😁😁😆😆😅😅😅😂
Great job Dr. Ghose. I love simplifying complex stuff and your explanation of such a complex topic was brilliant. Especially, the idea that it is a fluid mix and that the computer will un-mix after the user. GREAT JOB!
You know what they say...
"You don't know where it is but you know how fast it's moving and you don't know how fast it's moving because you know where it is.
It's just quantum physics"
Or maybe just Heisenberg's Uncertainty Principle? It depends, are you talking about electrons?
explaining why it's okay to be confused by quantum computing in 10 minutes
This video doesnt explain anything
Feynman : "If you think you understand quantum mechanics then you don't understand quantum mechanics"... trying to make sense of quantum physics in 10 minutes doesn't make any sense. Nothing in the quantum world makes sense anyway
Frank Maclow
So wrong!
Quantum physics makes all the sense there is. The only thing about it it’s defying our intuition.
Check for instance just the principle of uncertainty of Heisenberg. It’s really a principle that defies our intuition but after you understand how is that possible you will come to the point where it makes all sense.
I am 12 and I understand
It was Bohr not Feynman. And it is a stupid sentence if taken seriously. Quantum mechanics makes complete sense but it has loopholes which, because they are difficult to manage mathematically, are left open and idled. Fortunately not all physicists are so cynical and some have proposed alternatives to Copenhagen.
@Aufenthalt Good Morning to your brain, it was Feynman. Maybe try to not spit out your opinion on something that you didnt even fucking spend 3 seconds of googling on.
However, youre coming out even more stupid with your last sentence. If you meant Bohr, he was the one who worked on the Copenhagen interpretation of Quantum mechanics with Heisenberg. Thus, youre not only saying wrong things but also contradicting yourself mate.
Define understand
Furthermore I do not think you can effect changes through entanglement. You can observe the entangled particle's statistics and correlate them. But no instant changes can be made after that.
Exactly. I came to the comments to see if anyone questioned the "teleportation" mentioned in the video.
You cannot make changes to entangled particles. When you observe one of two entangled particles to be say, 1, the other is now instantly set to 0.
Before you observer your particle, it could either be 0 or 1. Let's say when you observe your particle, it turns out to be 1. That means that the other particle is definitely the opposite: 0.
As a result, you cannot use entanglement for data transfer.
@@Wiseindy Agreed :) Let me know if someone can explain how this can be used for computing. Until then I am assuming that the qbit-guys may have the wrong idea.
In my opinion, the action of 'flipping' seems to operate differently between the computer and the player. The computer's 'flip' is the Hadamard gate, and the player's flip appears to be the 'X-gate.'
Regardless of whether the player decides to flip or not, applying the Hadamard gate twice will converge back to the initial state H.
Also, using quantum entanglement to transmit information FASTER than the speed of light is still science fiction. No one know if this is even possible and many believe that it is NOT possible.
Here after this year's Nobel
So, the whole "teleportation of information" thing is a misnomer which is highly confusing for people not familiar with quantum mechanics. When 2 elementary particles, A and B, are interacted together, you can measure their sum to be 0 charge or 0 spin, which means one has +1 charge and one has -1 charge, or +1 spin and -1 spin. You don't know which of the two has what, but they never un-entangle themselves. You can separate the particles by as much distance as you'd like, and separately observe them to be +1 and -1, but A cannot be locally affected by B faster than the speed of light. If you only observe A, then B will collapse into the opposite state for as long as you observe A. Once you stop observing A, both A and B become randomized again until you observe them, at which time they can again be +1 or -1, randomly. This is called a non-local effect, because A and B effect each other regardless of separation in spacetime. But anything that A does (say, an electron making a magnetic field) that can travel to B's location and then affect B does not happen faster than the speed of light. In essence, that means this is useless for teleportation of information. Hope I wasn't too confusing...
Ucontradict yourself lol but ok u r obviously smarter than people who dedicate all their life to ot
@@matrixarsmusicworkshop561 How was it contradicting?
@Matthew Garrett I have a few questions. Why can the particles A and B as you called them not travel faster than the speed of light? And how because of this does it mean that it's useless for teleporting or transmitting the information?
Faz Naz123; the instantaneous collapse of the distant entangled partner particle does not transmit information. One gets one spin and the other gets the opposite. The angle was pre decided and traveled with the particles at the speed those objects can travel which is less than "c".
@@faznaz7455 You can already teleport information with the speed of light. That invention is called "the radio". Has some fancy implementations too like the cell phone, TV and sattelite communication.
When you show up to the first day of class and the professor expects that you already read and understood the first chapter then quickly summarizes the second chapter to start class discussion.
My cat, "We need to have a good talk about this box and that mouse...."
Me, "The box, the mouse...or both."
Cat, "What did I just watch?"
The reason why the quantum computer had that high winning rate is because the game was played in its world. Secondly, it has full control over its world and knows how to get what it wants with what it has. Hence, it will always win any game it plays.
That is one major problem of humanity. Lack of absolute control over our world due to very high uncertainty about the future. That is why we plan but may still not achieve the desired target due to unforeseen circumstances.
This technology has so much potential!!!
Being an physics student, you inspired me to research on quantum computers
Might wanna take take an english course on the side
@@ozdagap1809 🤣🤣🤣
"I have access to a 5 Qubit computer, but I used it to run a coin flipping game for which I knew the result." Oh and I gathered participant data that I knew meant nothing...
And ?
1. Quantum computers. 2. Pocket Nukes. 3. End of it all.
OK fine, 10 minutes was like Antman movie "Do you put quantum infront of everything else"
Exactlyyyyyyy😂😂😂
‘If you’re confused don’t worry you’re getting it’ is really an underrated joke herr
Clearest explanation so far on QC
Yeah, that didn't really explain it at all.
Ohhhh, so it cheats! "No, no I didn't pick heads, I meant to say tails!" (I've thought of this when I was 3)
I have a task for a quantum computer. The monitor can display the entire universe, we can look at other civilizations, and I have the task, find all the images combined into one.
In this film we see each other and maybe we are ashamed of our stupidity.
as a computer science graduate who's weak in physics and being forced to learn about quantum computing, having to watch this in hopes of getting any understanding at all was .... well like playing coin flipping with a quantum computer... hardly any chance for me to get something out of it. And the comment section is more satisfying than the video.
Do not waste time on this. The coin flip game is a bad and wrong way to explain QC. I do not like the Schrödinger cat either but it makes more sense than this.
She did perfectly well. Quantum computing smells like cheating in such scenario only because the state of the subatomic particles cannot be fathomed.
@@boulevarda.aladetoyinbo4773 No she did not. She said the computer can chose to flip the coin or not. But the computer does not do that. It puts the coin in a state where the humans choice will not matter and then it will just put the coin out of that state and it will be heads again. See source code here: github.com/MackEdweise/TEDxCoinToss
This is not an explanation.
Then what
It's a Clickbait video bro. Fake description
"The future is fundamentally uncertain and that is certainly exciting for me"
For what I've understand the game just gives emphasis on the super-position. So in the first flip it doesn't let go any of the two outcomes, rather hold on to both of them via superposition. Since the computer kept that in super-postion the players choice will also be in superposition. And in the last move computer just boosts the head probability so the computer wins
So what you are saying is quantum is all about uncertainty. I got it. A mad computer.
I got to 10:04. When does the 10 minute explamation begin?
Nowhere, she is just talking about how tasty it is.
Let me explain quantum computing in less then 10 seconds:
It’s basically a digital ouija board.
well, maybe then so is desktop computers, the mouse =planchette?
So where does Quantum leap come into it? Used to love that programme 🤔
Wonderful!. Quantum physics is a panacea for all our security and trust issues of today's computing/internet/digital world!!
Heisenberg's Uncertainty Principle had so uses. I couldnt'think..
145 people who understand quantum computers disliked this video.
*understand
@@priyankpatil thank you, I always make the same mistake because "people" in spanish is a collective noun, hence it is singular.
Interesting, it is plural in Indic languages derived from Sanskrit.
I am 12 and I understand
N 140 of them liked your comment
Very nice indeed. The computer does not tell you what happens in between. But it makes sure to display the final result to be heads. I could design such a computer without the super conductors that ibm use :-)
I've watched a lot of introductory videos about quantum computing, and even took courses for it, but no one explained the basics the way she did. It was so amazing to watch this TED talk!
2:31 is a great analogy
I just watched a video about how entanglement couldn’t be used to send information faster than light because you don’t realize it’s entanglement and not just a particle collapsing without being in contact with the other person who’s observing the entangled particle
I love the fact that we are creating something super intelligent on a quantum scale!! Wait! "intelligent on a quantum scale + AI on a quantum scale" UH OH!!!!!!
That doesnt really explain it... and the computer "checks" for user result to change his.... wtf?
No it doesn't check...but actually never changes. Basically it stays in partial head and partial tail. But at the end transforms too completely head which is the condition of the game for the computer to win.
Damn i loved the way she taught us the concept of quantum computing very knowledgeable and fascinating. Thanks ma'am
How to say everything and yet nothing. What a quantum explanation!
This video is very helpful, informative and creates a positive thinking. Quantum computing theory explained well.thank you
Beautiful presentation! Very exciting possibilities to explore!
The theoretical coin flip game was not explained in any manner that helped me in the least. WHY was the ability to work with uncertainty helping the process to predict? How could it be flawless (ie, 100% win, excluding computer errors)?
the end of the speech is really beautiful
Quantum key can be broken by other quantum computers. Though they can be good for people they could also be used for the bad
I do realize that quantum computers can do amazing things, but winning that game - that was cheating. It changed the rules so it would always be able to win.
not it. they did, because they wanted to wow the audience and imply that the quantum computer can read minds. spoiler alert: it cant.
completely agree. they made the game unfair by changing the rules. Its literally not the same game.
Oh good ai acts just like Trump. We're doomed.
Still didn't win. :)
This spectacular example of quantum computing is... the computer can change its answer. That's not quantum anything.
I'm gathering that the word quantum is mostly just a synonym for cheating
I lived in Vegas and after watching this video I’m convinced now that all casinos computers are quantum computers
She has the ability to turn anyone away who's already afraid of starting CS.
Who came here after Google quantum supremacy?
How
Addie Jack defo
The exact explanation of quantum computing is beyond our logic!!!!!😶😶😶
Im just saying that if the coin flips were in real life then I believe the quantum computer would go back to 50% success.
no
Quantum entanglement sounds so sci-fi I love it
well i didnt understand how this works, is it only me or anyone of you did ? like i knew this stuff happen in the quantum world but why do they happen and how are you useing them ? + the video isnt explaining quantum computing its demonstrateing how it can be used if thats the right word lol o well
You are right... I didn't understand it yet...
So if I understand this correctly (which I very well may not), in a game of chance where the rules are determined by laws we understand and can observe, a machine with quantum properties can manipulate the variable outcome by deconstructing and then reconstructing the matter upon which the variable relies to produce a definitive result?
Basically what I'm asking is in a game of quarter toss, does the quantum computer dismantle and then reassemble the quarter so that it's always facing up?
I think this quantum computer is just a lot of BS.
if you as a player are asked to make a choice, but the computer is allowed to float between choices, I'd call that cheating.
I don’t think that the explanation was clear but the speaker had very little time. For those who didn’t get it (like me) let’s represent head and tails as “state” vectors: |H>=(1,0) and |T>=(0, 1). In quantum mechanics a vector with norm 1 represents a physical state (wavefunction), for example (1/sqrt(2), 1/sqrt(2)) is the state where you have a fifty-fifty possibility of getting head or tails if you look at the coin. At the beginning the computer receives head (1 0) and returns the superposition (1/sqrt2, 1/sqrt2) : whatever the human does flipping this state won’t do anything. The first computer move was the same as applying the square 2x2 matrix [ (1/sqrt2, 1/sqrt2) ; (1/sqrt2, -1/sqrt2) ]. Applying it again to the state (1/sqrt2, 1/sqrt2) the human returned gives head (1,0). So yeah, the computer didn’t flip the coin. It used an operation that would make no sense for a classical computer since the only classical states are (1,0),(0,1) ; that is, head and tails. The “magic” is the fact that the quantum computer is certain to win whatever you do without ever looking at the coin! A classical computer could also always win but it has to look at the coin and choose whether to flip it or not.
I must appreciate Dr Ghose she explained quantum in a very simple way.
A ted talk that's actually interesting?! That's rare.
just spreading confusion about quantum computing with this video..
Classic TED talk:
1) Poorly explained initial premise
2) “We can use this to DESIGN MOLECULES”
3) ...”and CURE ALZHEIMERS!”
I was sure alzheimers were brought on by aluminum consumption. Dont need a cure for that!
Lol😂😂😂
This is the best TED talk I have heard in Tech
People after 50 years since Quantum Computer becomes normality:
I can't wait for another mind boggling branch of science to be found that make already boring Quantum physics extremely exciting.
Getting into quantum physics is, I believe, the closest natural beings can get to the supernatural realm. Its crazy. And considering where our world is today, while it is great technology, it is all the more dangerous.
ok swami guru
Amazing, quantas themselves , defined as particles sometimes defined as wave, their mass is zero, another time their mass can be calculated, really strange, when we step out of classic physics, the idea of uncertainty is more and more clear
She is more of a “philosophically bullshitting” about quantum computing instead of explaining what it is!!!
@Sanjay Srivastava then one maybe shouldn't title their video "a beginner's guide to quantum computing"
Great job Shohini
From 9:16 to 9:56 the words hit in my hearth and give burst of ignition in nerves! Yes The Universe is amazing and beyond our imagination. Informations, secrets are openly hiding but we can't access it for our limitations. Hopefully the more we make our brain active the more we get the existence of creativity to unlock the mysteries of Universe!