How Does a Quantum Computer Work?
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- เผยแพร่เมื่อ 16 มิ.ย. 2013
- For more on spin, check out: • What is Quantum Mechan...
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A quantum computer works in a totally different way from a classical computer. Quantum bits or 'qubits' can exist in a superposition state of both zero and one simultaneously. This means that a set of two qubits can be in a superposition of four states, which therefore require four numbers to uniquely identify the state. So the amount of information stored in N qubits is two to the power of N classical bits.
Thank you to Andrea Morello and UNSW. For more info, check out: bit.ly/17wZ7lt
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Classical computer: true, false
Quantum computer: maybe
I prefer yesn't
lol this poppped up in your recommendations lol this way made 8 years ago-
PERHAPS
Bruh as a programmer imagine we have individually force the bool to the system
Bruh….
Wasn't expecting Loki to do an explanation about quantum computing
The tesseract must have brought him here
C'mon you stoll my thought.
Bro that guys creepylookin af
I low key wasn't expecting it either.
@@user-lh2hx5xf4e random (dumb) question: the hanzi/kanji in your username looks quite complicated, that's not your actually name is it?
I lost it at the when he started explaining about the coefficient part
I totally don't understand the diagram at 3:01 and his explanation onwards.
same
math sucks :(
Where he was describing N qubits? All N is is a variable that is representing how many of something there are for instance if you might own 2 cars and someone else owns 3 cars you can describe both situations with both people owning Ncars where in your case N = 2 and for the other person N = 3. A coefficient is just a variable number placed before something that multiplies it. So what he was saying is if you have 1 qubit it can be in both positions at the same time called a superposition. where as classic computers can only be in one position at a time. As you add more qubits the positions can be multiplied exponentually. So he was saying if they have 300 qubits which means N = 300 and that 300 qubits can produce 2^N or 2^300 possible positions in comparison to classical computations.
Agreed. I keep looking for simpler videos but they're either not in depth enough or too complicated for me to understand.
Really like how this professor teaches. He's very understandable.
I disagree, I didn't understand anything, although I don't think that is the Professor's fault...
To be fair he didnt get into any details, it was just general information about the topic
@sr1nu he's italian and I think he works in Australia, so it's a superposition of the italian and australian accent
@@mmehdi3437 you want him to explain whole quantum physics in a youtube video? He talks very understandably and he's probably a great teacher. he knows what he's talking about.
If you're talking about the long hair dude on the whiteboard then you smoking rock... He didn't make a lick of sense to me. I've watched it twice now and have no clue how it works nor how it could be better than a standard computer.
it's amazing I don't even understand a single bit.
Neither do quantum computers.
Write these two comments in history books.
It's just really fast computing, the quantum state stuff is just on and off just faster"slower" (think of space time slowing down) like a dimming switch on a light. An easier computing way would be to have a computer register 5 and 0 as on and off 1-4 and 6-9 as quantum numbers (dimensional movement) no such thing as quantum it's just really fast. The photon pairing example can be just seen as gluons and bosons(slower)
+Ganjanaut moores law continues
+Ganjanaut LSRSL
The comments section:
100% : I don't understand
100% : I understand
.. And that's quantum computing
That is true until you actually read the comments.
Underated comment
Its called understandn't
That's true and false at the same time
Aashish Singh so you understand then? Lol. I measured your state and saw that you understood. Maybe next time I measure, you don’t understand lol.
02:33 - the moment he realized the average viewer won't understand anything. And he was correct.
To him, the average view both understood and didn't understand at the same time
i feel like i kind of understand, but actually not at all
You know what this is 8 years ago and I wanna learn more about quantum computers but don't have any recent resources
@@Wraient check IBM’s public resources and documentation on quantum computing.
@@hem9483 Thanks for letting me know
This video should be titled “Italian Metalhead Explains About Qubits”
probably romanian tho
@@nicholas132edm no, he was born in Pinerolo, Italy.
LOL most likely prog metal
He looks like Fabio Lione (power metal singer in Angra and Rhapsody) and his voice is almost exactly like Fabio too
A 'scientist' trying to look cool just comes off as a pretentious douche. Credibility dubious at best.
That's the first time I've 'got' how quantum computers work. -'it's not the speed of the individual operations, it's the number of operations it takes to reach the result.' No magic. Andrea is a superb scientist. I love his explanations. Thank you!
Agreed
Well, even though some explanation is done, I still don't understand what an operation is and how it affects a qubit's state. And how operations mutualy use those states. And how one programs a set of operations anyways.
If I'm not mistaken, a qubit only holds the intermediate states between the beginning and ending of a sequence of operations. And after you read it the state is gone.
I'd interpret this as operations can't read qubits either but just influence it. Sounds a bit like analog values getting amplified and dampened until the outcome is reached.
Anyways, if you understand it better then please let my know
@@what9418 I just came here for the free headache. Good night.
Yes, even now I realise why they are used in HPC - high performance computers for parallel computing..
Just WHAT do you mean "no magic" ????
This electronic engineering is BEYOND magic !!!
Absolutely Astronomical out of this universe ...
Epic accent: Check
Epic hair: check
Epic soul patch: check
This dude's got it down
Yes, where are all the likes..
He is prolly french
@@navindamansitha3684 italian
Or does he have it... Up?
He is Italian
almost 8 years since the video was made and i still think this is one of the best explanations i can find for my tiny brain to comprehend the basic definition of quantum computing.
Its amazing that last week a 500 qubit quanum computer was developed
@@glendisshiko8182 So that's the same as 2^500 classical bits? Amazing.
Finally someone actually explained how they work! I’ve know for years about how, “it’s nothing like a classical computer, it can have bits in superposition” but no one told me how to read the qbits or how they interact.
Yes, but how does the computer *actually* work? How does it store a qubit? How does it entangle the qubits? How does it read the basis state? How is he algorithm strucured?
These are my questions, too.
Einstein spooky theory
Top 10 questions that even science cannot answer.
@@jcf20010 Shut up im smart!
@@jcf20010 This was literally the next video suggestion for me
Tha guy's accent, it's legendary.
And his Adams apple
What accent?
And the way he writes (Inverted lefty?)
He somehow remind me of Loki, from Thor movie
Now you mention it, indeed!
For those wandering, why when you add up the coefficients in front of the possible states of the electron spin at 1:35 you don’t find one (which would mean he made an error in the probabilities) , it’s because these numbers are just coefficients, if you want to get the actual probability of getting an electron spin up/down, you have to square the coefficients:
(0,80)^2 = 0,64
(0,60)^2 = 0,36
And when you sum up these numbers you get one.
What happens when both coefficients are 0.50?
@@johncarson5436 From memory it is because of how the probabilities are calculated. Determining the probability is a function of the electron charge and its momentum. I realise that probably means nothing. Its a super abstract concept and is only expressed by the underlying maths.
@@johncarson5436this is not a physical state
No clue what your saying. lol
@@johncarson5436 if both coefficients are 0,50, than you must have made an error: 0,5 squared is 0,25. There are only 2 possible states for that electron: spin up of spin down, which means that your probabilities don’t add up to 1 but to 0,5 (which means there are other possible states)
If the probability coefficients are both 0,5 (and not just the simple coefficients) you have a 50% chance of observing that electron spin up, and 50% chance of observing it spin down.
PS: if the probability coefficients are both 0.5, that means the coefficients are equal to square root of 0.5, so that if you do the math backwards: sqrt(0.5)^2 = 0.5 :)
I emphasize on not confusing the simple coefficients and the probability coefficients
I remember my physics professor at Georgia Tech was building a quantum computer back in the early 2000’s, but it was probably a 2^1 or 2*2 Qbits at that point, 😂. Smarter than I’ll ever be!
I have what scientists call QI or Quantum Intelligence, which exists in two states, before you measure it, I am both Intelligent and not, but once you measure it, what you find is that I am not intelligent 99% of the time. By the way, I don't even understand this enough to make an appropriate metaphor, and this is the 1% trying it's hardest here.
Haha
Lol
At least you were able to make a proper analogy
Couldn't that also be called SI? Schroedinger's Intelligence? :)
brilliant!
That physicist thought he was explaining himself but he really wasn't..
I would love to see another video from you on the advancements (if any) made in quantum computing !
Finally, with this I can run task manager at 60 fps
When you accept to wear in a big red atom disguise, that's the moment when we know you're truely dedicated to you channel!
Its not an atom its a proton
@@auredio6838 He is talking about Phosphorus, so no its not a Proton
i dress up like this every day
@@eeevoo oh
i lost it at 0:00
LMAO
XD
ramadhan karim
Youcef Mahdadi Allah akbar
ikr
This is probably one of the most confusing topics but the professor handled it very well.
professor Morello is amazing he can explain this complex concepts so easily... the rockstar of Physics
The minute I saw him in the video, I felt like this dude has some really good energy. Just someone you would immediately trust! A genuine but also extremely smart person! People like that are very rare.
I really like that dude, his eyes are so expressive. Bitchin soul patch too.
Milky Way Laniakea Superclusterite His eyes are amazing
Milky Way Laniakea Superclusterite if you’re gay that’s cool. You GAY
Im so proud to say he used to be my lecturer
Andrea Morello is my new hero.
Explains things so nicely!
ikr
Did veritasium go on a holiday to Australia to make the video? ;) Edit: Oh he's Australian with a Canadian accent...
Debajyoti Sengupta you should check out how nice his hand jobs are.
@@Dhirallin he is italian
Love the clarity the prof has and the nice silliness of breaking it down to my level 😀
It's amazing how well the professor explained it! High level overview, while also mentioning all the relevant stuff.
Well that explains a lot, still don't know a thing
+Justin Zh I came on here to find out why people were so hyped about it and what it could do but i guess that info just isnt here.
+-=[Kuledude Gaming]=- You have to understand the properties of 2^n. Think of it this way. Put a grain of rice on the first square of the chest board. Double it it for the next square, adding 2 grains of rice, 4 for the second, 8 for the third and 16 for the forth and so on. When you reach the last square you will have (2^64)-1 or 18,446,744,073,709,551,615 grains of rice, a pile of rice the size of Mount Everest and 1000 years of the entire world's rice production at 2010 levels.
So, if you manage to build a quantum computer with n bits, and manage to keep those n bits entangled, it can represent 2^n states. So 4 for n=2, 256 for n=8 and 9 trillion at n=64. So in other words you can do much more for less. But only for certain (important) types of problems, because you need to be able to collapse all these states out to one you can actually read.
Uh... very long, much words, very confusing. XD Anyways, i think i got what you mean, but not sure.
uh ok? xD
xD
I guess the future is hybrid CPU's.
Just like we use specialized CPUs called GPUs to render images, we will use QPUs (?) to calculate something which benifits from it, while still using CPUs for all the other cases.
to better wet expand on your concept i belive the "domestic" application that can benefit the most from these kind of operations are exactly those made by the gpu,that has to process lots and lots of shadows and physics calculations at the same time,or to render a large video,as per say if you encode 2 bits of it at a time or 2000 it doest make a diference,so i belive that we are going to see 2 things from this 1st is quantum based gpu,s and second something faster or even a improvement on ssd,s so that they can keep up with the large amount of data transfers needed to acomodate such power,otherwise your gigantic quantum computer will be as fast as you can transfer data arround...
*****
Or perhaps at some point we will hit a bottleneck,either because of the limitations or the possible price tag as an outcome.You can see it happening right now,instead of going bigger in sheer amount of processing power,developers create techniques to do whatever they want/can with the existing tech.
Think of it this way: You can stack cards only so high,before they collapse.
imagine the cooling you would need...
Kronguard Price is not a problem. Simple economics say that so long as the demand and supply are high enough, the price will drop. Developpers are creating techniques to harness as much power as possible with existing tech only because of the existence of consoles. Being limited by generations, instead of the continuous evolution of the PC, they have to look for more sophisticated techniques to get as much power out of those machines as possible. This is both a good thing and a bad thing. Creating these techniques frees up memory, but being limited and having to spend money on the technical aspect of the game instead of the gameplay and to some degree graphics is not that good.
You're not considering the nature of GPU's and the way they process information.
Cpu's work in serial; each line of code is taken in sequence, one by one. Really fast, but still, one by one, and has a few cores dedicated to that.
Gpu's work in "parallel"; they work with floating point numbers, and can take several lines of code and process them at the same time, it has thousands upon thousands of specialized cores.
The better an application is optimized for GPU-acceleration, the more "room" is given to a CPU for other processes, and thus the bottleneck someone mentioned can be taken care of.
Eventually yes, a CPU bottleneck will occur because transistors will eventually reach the limit in manufacturing process, and so will GPU's, but we still have a few years for that, and there's a big chance that by then there will be a different material that will allow for a smaller manufacturing process of the transistors, which will account for that.
This is the most amazing ~6-minute explanation of quantum computing principle that I had ever seen.
Amazing!! Thank you so much. It's a big help in figuring out what I'd really like to learn more about as I complete my degree (engineering physics).
I admire how accurately and gracefully Andrea dissipates all the myths built around quantum computers.
veritasium dressed as a phosphorus atom is my fetish
Omygod
phos-play
So are your gonna ask him to put his huge electron in your vacant orbital?
this does not deserve any of the ~500 like it has
@@vivekbarjod6815 who says hes gay?
The video is a gem! The man at the end really caps it up good explaining the math bit
this is such a great well-rounded explanation, thank you!
Seriously... when this guy looks at the camera I'm sure he can read my mind.
0:40 Ping!
0:57 Ping!
This is by far the best explanation i've seen to date on Quantum computing. BRAVO!
Andrea Morello is an amazing teacher! Thanks for that!
Why do I like veritasium dressed as phosphorus atom so much?
What I like even more is referring to Derek as "Veritasium". Which I will do every day from now on.
ping
+Mikolaj Gackowski Dr. Derek Muller
Vacso Kagazzle Laloobay Hoophorn Wacago Seiliu bb
I think I heard someone laughing below their breath when he was the phosphorus the first time around.
0:40 *BING*
0:57
😂
@@Singh-pe6zg
1:08 the big brother
This is the best explanation I have heard yet of how quantum computing actually works and what it is good for
Just loved that he did explain in the technical but understandable terms, and as a highschool physical chemist student, I understand all this very well.
Also love the nutsell telling that it just won't be improving our classical computing like browsing web or stuff
Don't understand a thing but still watching.
Now i understand it but still watching.
Nethkrill Vesta You've been watching for two months? Dedication, my friend.
Victor Kyrg Oh yes, my friend. These science videos are like ganja to me. lol
He talked me out of building one.
Me too. I was gonna run Windows 95 on mine. Damn.
hahahah
what do u mean ? :P
一排污3哦2U切E 865 . , 0.,0000009.00=0
w。
.,, ,. :-);):D 可哦E
Don’t bother. Can’t even run Crysis... har har har.
great explanation , thank you , i needed to hear exactly that ; a short introduction to quantum physics may help but the title perfectly matches the content
Very interesting, educational and nicely done video! Great job :)
i watched this three times, just enough to gain 3% of what he is explaining. Im taking what little i have learned and protecting my sanity.
Lol
well i watched it three times and i am already at a superposition
You just need to watch it 97 more times:)
@@royhsieh4307 🤣🤣🤣🤣
@@101perspective hmm
this is the best explanation of qbits i've ever heard. thanks!
cubits in the bible.....get it??
Agreed, this was very well explained.
don't pretend you understood it...
kidding, i just don't get it. i understand the computation power reference, but i don't get what superposition means and how to use it
Guys, this is really a great explanation of Qubits and the best one I've seen so far.
I suggest that you guys look at some videos on the basic properties/phenomenons of Quantum particles/physics before diving into Quantum Computers.
More please, this just seemed like a pre-roll introduction, with the good explained stuff to follow
TH-cam suddenly decided to recommend this cool video after 10 years 😅
No computer is out of the realm of the blue screen of death!
+carlos carrion Any computer that does not run on Windows
+sweiland75 they still can crash though
+sweiland75 OS X has crashed on me a few times. Linux too.
wowitsbryce
They do not have the BSOD
sweiland75 BSOD?
0:40 - "bing" that made my day.
1:09 the sound of turning needle other way
I have more simpler analogous example for everyone to understand here.
Mr X can understand 1 question from one of the 3 people throwing questions at him, at a time. So he will take 3 turns to understands all 3 ppl 1 by 1.
But here we have the genius Mr . Y. He has the special ability to absorb all 3 questions at the same time. Why wait 1 by 1 when you could take all at once ?? !! Awesome isnt it??
Now 2 Mr X (2 bits) will understand 2 questions at a time.
But 2 Mr Y (2 qubits) will understand 2^2^6=256 questions at a time !! Because they can superimpose their input ability in exponential!!
Keep adding Mr. Y (the qubit) and you get the capability to absorb billions of times larger amounts of questions in 1 go. Freaking awesome !!
Done.
------
Now talk about why they so large and ultra expensive??
Quantum computer basically lifts the limits of hardware construction. Current cpu design is such that it can only be some mm thick.
But quantum computer breaks this limit and goes all way up in hardware, thus you se those huge quantum CPUs.
More simple: Like intel or Amd cannot make faster cpu by increasing cpu size, it's counter productive and that cpu will not work. Like your brain cannot be the size of an elephant to make it more powerful, it will err and die.
But quantum cpu can be made as bigger as you want and it's processing power will keep multiplying exponentially!!! Thus it breaks the limits of current microarchitecture and utilizes full hardware possibilities in all directions.
But the problem of cost and power consumption will remain there...it will all depend how much semiconductor technology advance, allowing some smaller quantum computers still millions of times faster reach to the public. Will take some decades though.
Until then, we will only see them installed in big tech firms.
He does a great job at explaining it. Picks his words with great care. Now I want to know which types of calculations would benefit from quantum computing.
0:39 Ping
nice
ping
spin not ping
Amber Spirit says ping
M1 garand
With every incremental discover in technology we get these huge leaps forward, i can't imagine what people will eventually invent with it.
This is one of the most clear explanations I have ever heard for info that is new to me.
I was thinking:
"Wait... is he italian?"
Me controlling that he has an italian name:
"Yes"
he was half italian until you saw this video
How do you differentiate a westerner? For an Indian guy, all westerners are the same
That's raci...!! Kidding. By the accent; sounds very romance (as in romance languages), the way he speaks, the hard pronunciation of consonants, the intonation, the way he constructs his sentences and some words he uses. Also the name is a big hint, but you as an Indian probably have some of these features in your speech as well. There are Europeans who look noticeably different (i.e. Spaniards-Norwegians) but in some places they are really different to tell apart, even from Americans, and that's because it's a society built mainly by European immigrants that mixed maybe as much as in Europe itself.
@@kangkanlahkar9045 I guess by their accent, am an Indian btw
@@kangkanlahkar9045 as an italian, I knew he was italian before reading his name. He just speaks in the same way most italians do while speaking english at school. I don't know the specific features that make me say so, he just sounds italian. That's the way we speak I guess
That long haired guy is an example of a great communicator; I think it's very easy for similarly intelligent guys to spew tech talk that passes over many heads
And on the side, his accent is great...
Agreed.
They could of chosen a professor from Cambridge, most I've seen are great explainers.
Well, I never expected it to be like this. I got the idea of quantum computing (last year - 2020) even before I came across this vid. My basic concept was to make components smaller than what it is today. So small that it would use sub-atomic particles to process information, like some sort of hyper computer. Now I came to know that these computers actually exist and are "not" suitable for personal use.
My goodness, I am not sure if I understood it correctly, but this video was sooo educational! Thank you very much!
but can it run crysis 3 at ultra?
+yrjosmiel73 If they're talking about it being good for massively parallel operations, I can imagine it may actually be applicable to GPUs.
+yrjosmiel73 As far as I know, no truly working quantum computer exists right now, so probably not. But then again, I won't know until I've searched for it. It is currently in a state of superposition.
+cjdrey Google has recently made a quantum computer, just look it up.
+yrjosmiel73 nope . Crysis wasn't made for quantum computers and like the guy said it may be slower cuz it would use power just to convert to traditional code. Maybe when quantum PCs become more relevant can the cry engine use it's advantages.
+yrjosmiel73 asking the right questions
Basically you won't be able to watch porn faster, but it'll solve your math homework in a blink of an eye.
+1992mikern porn makes you stupid and impotent.
It should take far less than 300 milliseconds though..
Faster is better. I accomplish the same task in 300 milliseconds that takes other men 7 minutes
1992mikern lmao u bust after 300ms? XD
The NSA would be able to crack your Gmail password in the blink of an eye.
This is the best explaination so far i heard about Quantum Computers!
I am watching thiss video today, after 10 years when this video was released, and this is way better than present videos on YT.
i didnt understand anything, but was oddly compelled to keep watching...
that long heir guy looks like a head of Vampire club xD
You just made my day
+mheboob khan hahahaha
+mheboob khan I live in Transylvania!
hair*
I love this man. This was an awesome explanation. Thank you.
Professor of the year. Great at explaining things in a way I understand.
What I'm still having trouble understanding is how can we get useful results out of a machine whose state is based in probability and chance. I've been looking up answers all day, but very few make sense to me.
My thoughts exactly
Pretty much they are accessing the a wave function superposition meaning every possible answer you can think of and they are also with holding information on how powerful this machine really is .this machine is precognitive and it's been around and in use longer than they say it's accessing information from every source of possibilities that exists . Oh and it does so much more .
Alex Enschede You mean to say we can solve TSP with O(n^a) complexity with quantum computing?
To summarize what they said in the video, the computer starts with all possible states, putting all possible states through your algorithm as the variables and simultaneously calculating all possible results, and then you read the result, but by reading it, only one result is created, influenced by probability, because you can only read 1 or 0 and not the probabilities of superpositions.
For example, lets take a formula like a = (x && !y) || z. Lets say, for simplicity, we assign just one bit to each number on the right hand side, so x, y, and z equal either 0 or 1. If you calculated with a quantum computer it would calculate everything at once.
x | y | z | =a
0 | 0 | 0 | =0
1 | 0 | 0 | =1
0 | 1 | 0 | =0
1 | 1 | 0 | =0
0 | 0 | 1 | =1
1 | 0 | 1 | =1
0 | 1 | 1 | =1
1 | 1 | 1 | =1
I'd assume that every bit starts at 50% chance of being 0 or 1, so a would have a 62.5% chance of being 1. I'm not sure, but from what they were saying I think they may have some kind of method of checking each line of the table one at a time. I'm still not sure myself, it's a confusing field and I haven't yet found any absolutely complete explanation.
Basically, this could be used for powerful algorithms that consider every possibility at once. For example, a physics engine that calculates everything about a particle with every possible starting condition and then applies those calculations to each individual particle within the simulation at each tick of the clock; it would be like having parallel processors for each of the thousands or millions of particles in your simulation. This could be used for everything from gaming to theoretical physics simulations.
A basic example would be trying to obtain cryptographic secret key that matches known public key (this is mathematically possible but requires billions of years on classic computers). So you set the quantum computer so that all results will initially have the same probability and then you check it against the secret key with carefully designed algorithm. All possibilities will be evaluated at the same time and the correct result will increase its probability. Read the qubits and repeat the calculation a few hundered/thousand/million times. Then check the values on classic computer in order of how often they appear and you will find the result probably in a few seconds.
its taken me almost 4 years to understand anything said in this video
Enlight me pls, i dont have 4 years, i wanna know now :D
@@mario2872 haha. Nice . Each of our messages is a year apart . I'm gonna go jack off now . Be back in a year
Revolution NOW Ur gunna whack it for a year?
@@trilexi 1 hour
@Mario A quantum bit can be used to count faster than a normal bit because a normal bit can only go on or off but a quantum bit can go on off or half off so it is just better for some things.
wow this is quite high production quality for an independent channel in 2013 this dude deserves his success lol
Finally, a description of quantum computing that I can understand. Thank You!
Its interesting that he says they can be both 0 and 1 at the same time. I'd venture to say that, they are not 0 and 1, at the same time. Instead, they are interchanging, just at such a rapid rate it is perceived as being at the same time.
I'm not even good at math, but I have somewhat of an understanding of how quantum computing works...and this guy is a very good teacher. His explanation was fairly clear for a layman like my self.
This guy made me realize that my top-of-the-class awards in first to fourth grade didn't really reflect my intellectual capacity. The more he explained it the farther I got from grasping it.
That’s good. Hang in there man
The way my mind had shut off after the qubits information holding part.... Was amazing 😂
so basically you need (n * precision)^2 normal bits to determine a single qbit.
For example with regular 32 bits floating point variables you'll need 128 bits to determine 2 qbits.
yoni0505 Yeah !
it means we can play GTA 99999 With high or ultra .. also we can watch 4K or 99K on any phone
or any small device
THE Future
xSniperU Did you even watch the video? th-cam.com/video/g_IaVepNDT4/w-d-xo.html 6:23
So, basically, it's good for making huge combinations in a short time period, but not for transforming information, because the position of each electron has to be measured every time. So it's good for storing data and data analysis, as I understand. Think of a grid of electrons that can go up and down, instead of the classic bit, where the electrons have to go back and forth.
Summarised it all perfectly in 3 sentences.
In other words, good for brute force computations.
@@Diana_L. Yes in other words :)
@@hamedkadkhodaie7715 So, what they're doing is basically trying to design more efficient heuristics by exploiting quantum properties. Unlike classical algorithm design, which is mainly concerned with reducing the asymptotic complexity of the problem itself.
@@Diana_L. exactly you explained it better than me
This was an excellent explanation and I've listened to a few.
Highly informative video. Thanks a lot for your efforts.
My thesis is that every result is based on the same quantum principle. Any result has to be handled as: true, false, both, none.
***** interesting
Cool. I always thought Quantum Computers are the perfect thing to replace traditional silicon-based computers. Turns out I was wrong. Thanks a lot for the very helpful information!
you was stupid as hell.. that's what you was..
Cant wait to play quantumm Minecraft
@Veritasium, can we have a new version of this? I am not exactly sure how it actually works, how do you store/modify/read information exactly given the basic fundamentals of representative power of this platform. Also, Andrea mentions it is superior in a different kind of space, where parallel computations are dominant. Maybe in 2013, not many parallel computing applications were realized. However, now with deep learning and highly graphics intensive applications available, would love to see how this works and performs in contrast to GPUs, what are the real applications where this would shine, and perhaps shedding some light on recent advancements from Google and how far we have come along the long way would be great. Thanks!
Really cool how he made this video 10 years ago with a broad level of understanding and it's just gaining major relevance in 2024.
how in the hell did I manage to understand that?
You must know english language.
quantum physics and computer science too
becuz ur fucking pretty
***** wouldn't that imply the opposite
listen the sentences carefully and the moment you realize you're loosing the track start again from where you remember the last thing you fully understand!
The "one type of computing" they never seem to tell you is brute force decryption.
I want to study quantum mechanics to get a long hair like him
I didnt think it would be that hard to move a compass needle but his "ehh" just proved it was hard
yeah but...can it run crysis?
Only at 800x600 on Medium, shadows off
"Does anyone would like to take a break?" Me: Please, let me out of here..
I still don't understand how the randomness of superposition helps in calculation.
Y'know what? This is magic. That's the only reasonable explanation. I'm gonna go look for witches now.
there's definitely some applications of quantum algorithms to graphics though, especially in simulations. but currently even if we find those algorithms they remain theoretical until we can sort out the mechanics of a practical implementation.
Amazing job!
Greatly appreciate all the work you do, I've never seen anyone who would be able to explain such a complex topic in just 6 minutes
This is the first time I actually understand the real difference between a Quantum computer vs a legacy one! Thank you heaps!
“The speed is not in the amount of operations that it can perform but just in the amount of operations it needs to get to the mathematical result”. He couldn’t have been explained better, this is awesome.
Crazy realizing this video is 10 years old. Think of how much progress has been made in that time.
And then showing us means it was already well known of maybe decades prior