You don't know how Quantum Computers work!
ฝัง
- เผยแพร่เมื่อ 13 มิ.ย. 2024
- 0:00 Intro - Why Quantum Computers Shouldn't Work
1:22 A Toy Problem
4:00 Solving the Problem With Quantum Computing
10:11 Why Does it Work
13:12 More Practical Problems
15:02 Outro - Quantum Computers Are Coming
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Video on quantum security coming "soon"
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Quantum Computing for Computer Scientists
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this made me consider alcoholism
+Universal Only now the glass can be half empty and half full at the same time.....oh wait. ;)
+TheRobster2007 I get it! Ha ha ha ha ha ha ha!
Alcoholism is in a superposition between a great, and a terrible alternative to reality.
Universal :
Sorry, it's not alcoholism, it's algorolism, the addictive effect of trying to mentally digest too much quantum - clear as MUDD
I still don't get how it can be 0 or 1.
So, if I think I don't understand quantum computing, do I understand it or am I in a super position?
What is this?!
*emotional music*
***** Meh.
+jusk We all do and do not understand quantum computing at the same time.
Wes Tolson Tell it to the guy who made D-wave.
both ?
this video is simply awesome because it does a few things that many other explanatory quantum videos try to do but fail.
1. break down the weird quantum logic to an understandable level.
2. always keep the complicated math to a bare minimum.
3. despite the minimum math the flavour and the essence of the subject was never compromised.
4. do more than the customary glossy lip service to quantum computing power and actually convey it's strength and advantages in sufficient detail.
5. always had some humour in the air.
this video was must have taken a lot of effort. keep it up dude
Harini K precisely
why would math be kept at a minimum? that doesn't make sense
I strongly disagree. His video is misleading, it talks about quantum mechanics with such an extremely high level of abstraction with "bloc circles" that it is not even clear what is going on. He then does not even answer the question he started with, but shrugs it off with a Richard Feynman quote that it's just impossible to understand. Waste of 15 minutes.
If you feel compelled to mention Comic Sans, this font is not Comic Sans. It's called Chalkboard.
+Frame of Essence good job for all the work done on the video, must've took some time understanding all of this.
+Frame of Essence too close brah
*****
Thanks, I might switch to one of these.
do you actually study phisks
pleas answer
+ROY WHEELER xD
try to search some phisics basics...
I have to say that out of all of the videos about the basics of how quantum computing works, yours have been by far the easiest to understand. Well done!
+XDraxis Thank you!
XDraxis welp, that means I’m fucked.
Easiest to understand...but...I’m still soooo damn confused. Hahaha!
@@scroch7777777 You should be, if you understood the video then you should realize it makes no sense. He speaks about quantum mechanics in such abstract terms with "bloc circles" that there is no obvious physical meaning to anything he talks about, and then concludes the videos saying he has no idea what' going on and gives a Feynman quote saying it's impossible to understand. Anyone who watched this video and came out thinking they understood anything clearly did not pay much attention because the video makes no sense.
the more i learn about the quantum computer the dumber i start to feel xD
i feel both dumb and smart at the same time
join the Dumb-Smart superposition
+BlackerHawk Nice!
Same here friend
@@blackerhawk1508 That idea should be made into a t-shirt design!
This reminds me if a quote from Einstein - "If you can't explain something simply you don't understand it well enough"
I think that applies to every explanation of quantum computing I have ever heard.
I think I kind of get why Einstein hated quantum mechanics.
@@frameofessence it's Feynman :/
@@nguyenhoanglong420 no, Feynman didn't hate quantum mechanics. Einstein did. Feynman said "if you think you understand quantum mechanics, you don't understand quantum mechanics." Einstein just didn't like quantum mechanics because it seemed to clash with his theory of relativity, which we have discovered since his death that it does not.
Einstein hated quantum mechanics because he couldn't believe that quantum entanglement is faster than light. He fought that idea till his death, he even invented wormholes and such things, to give an alternative explanation for quantum entanglement. We know today that he failed, because quantum entanglement actually IS faster than light. At least 100,000 times faster, according to Chinese researchers. Maybe even instant.
@@cinegraphics Quantum entanglement IS instantaneous and there's no doubt about that, but you can't use it to pass information faster than the speed of light. So Einstein can rest easy on his deathbed.
that's some hardcore shit man, imma go back to social studies
Ouf
Pussy
@@whannabi Quoi?
You have way too few subscribers.
agreed. need more subs
You can help him by simply sharing, liking and commenting.
+ProductionPresents One subscriber more now. ^-^)/
+ProductionPresents *Too little subscribers
+ProductionPresents That's the sad reality of educational videos.
Rick and morty reference at the end?
+Patrick Callahan shhhh! It was supposed to be subtle! :P
+Patrick Callahan Immediately scrolled down here to see if anyone else got it. First comment in....I was not disappointed :)
+Patrick Callahan whats rick and morty........Googled it.......Got it NM :)
That was Awesome! I didn't understand a word, but it was awesome!
Secret Profile Yeah, but it sounds so cool!
yup mark of the beast
+Don my thoughts too!😣
Thanks for the headache.
Robert Shackleferd 😁😁😁
Robert Shackleferd yep! 😁😁
I was about to comment: "No! I actually watched the best video ever on quantum computing, and I learned it." Then I realized the video I watched was this one.
i got lost around 0:00
Curiousity 😁😁😁
i got lost before I even clicked the video
And in 30 years: welcome to the gaming PC family, QPU
dude you know what happened in the last 30 years?
First you stands for graphics processing unit and CPU stands for central processing unit so quantum processing unit doesn't make sense. And secondly quantum computers would suck at gaming. For gaming you need hundreds to thousands of cores not 1-8 like in a modern CPU.
CQPU* ;)
That's why he said in 30 years...he's assuming quantum computing will be adapted to the gaming environment...
Why put quantum processors in a pc if you can just optimize normal ones? Using an AI to help design/optimize future games could be a very real thing performed by a quantum computer, which would help benefit the masses A LOT.
Rick and Morty easter egg at the end!
+Juan Pretorius you mean a reference?
+Nyxi You pass butter...
Steven Augustine yeah the end was referencing rick and morty
Nyxi It's both a reference and an easter egg
Juan Pretorius no, it's just a reference. easter egg is something that is actually HIDDEN and FOUND. i dont think you've been on the internet long.
time to buy new qpu
ha
in 12 hours
Matouš Hrdlička there is still a stupid peoples who cant even solve 2 x 2 cube but talking about buying Quantum computer .... did you even realised what QComputer is? this computer is not meant to build for stupid , fool people
It was a joke. This computer is mean for things what normal computers cant d or are pretty slow at it.
And quantum computers will be as soon other people will have acces to quantum computers even others will need that because of quantum cryptographics.
AH.
MY BRAIN.
I'm so confused ;-;
Ya, it hurts...
It's melting!!!!!!!!!!!! Helpppppppppppppppppppppppppp!!!
Brain stopped working... Press any key to terminate.
LMAO so relatable
I understand transistors, diodes, I understand 3.3 Volts.
I do not understand Quantum Gates.
Hot damn I'm so glad I was introduced to this channel. This was awesome.
As a CS guy I never really understood what the big deal was with Quantum computers for the exact reasons you stated here but you've made it really clear how it works any why it's important.
You've got a real talent for clear, simple explanation.
Please help me understand, it still seems to me that after trying to understand the video, the problem of solving multiple problems via quantum computing is still unsolved.. flipping a qbit right to left depending on whether y-qbit is right or left only solves one problem at a time, no?
miuaia1 yep and the remaining problem is solved by the first example which is around 4:30
That was a great explanation for someone who understands some of the math.
The concept of entanglement alone just sparked something inside me... The possibilities with THAT ALONE are endless.
My brain just got completely destroyed watching this... on a quantum level...
Well I think I still don't know HOW QUANTUM COMPUTERS WORK. Very nicely explained . Great Video. Thanks Friend
Samarth Sai huh? Are you in the same conversation, w yourself?? 😀😁Oh yeah, you were probably somewhere else at the same time.
9:10 Well aren't you just breaking your own rules then? If by definition X never changes, then any operation that would change X is invalid. Right?
+Gediminas Masaitis Kind of. That was the classical description of the circuit. That description fails to accurately describe the mathematics once we get into superpositions.
This guy is like an under rated CP grey in a lot of ways.
Like just for the Rick and Morty reference
tfw YOU by making these videos more and more understandable for people, you are the one that is learning the most since in order to 'simplify' a complex concept, you need to DEEPLY understand it. And your knowledge about it gets deeper and deeper the more you try to explain it in a simple way. Thanks for this content, but also congrats, you have just increased your own knowledge by a lot.
Here's the explanation you requested at the end of the video, though I don't know if I'd call it "simpler".
The NOT gate toggles between up and down. It turns any state 'a*UP + b*DOWN' into the state 'b*UP + a*DOWN'. Notice that this operation doesn't affect the UP+DOWN state, since a=b for that state, but this operation negates UP-DOWN. Instead of describing this operation as "the NOT gate" or "the operation that toggles between ON and OFF", you could describe it as "the operation that negates the UP-DOWN state". You can do this for any operation: instead of talking about what it toggles, tell me which states it negates (or phases; look up 'spectral decomposition' for the math behind this).
Now let's go in the opposite direction: start with an operation that negates a state, and figure out some states that it toggles between. Suppose I gave you a "negates the DOWN state" gate. What are the two states it toggles between? One possible answer: UP+DOWN and UP-DOWN.
Time for controls. Notice that adding a control to a gate adds a condition to the state it negates. A controlled "negate UP-DOWN" gate is a "negate UP-DOWN if control=UP" gate. Actually, we can fold the condition into the target state. This controlled gate negates exactly one state: the "first=UP second=UP-DOWN" state. It's a "negate first=UP second=UP-DOWN" gate. Now pull this "move condition into state" trick backwards, but on the other state. The "negate first=UP second=UP-DOWN" gate can also be thought of as a "negate first=UP if second=UP-DOWN" gate.
Now change that conditional negation into a conditional toggle, and we're done. The "negate first=UP if second=UP-DOWN" gate has an alternate identity: the "toggle between UP-DOWN and UP+DOWN if second=UP-DOWN" gate. Or, said another way, "toggle first between left and right if second=right". And that's exactly what happens in the video.
The ability to switch between a "negating states" mindset and a "toggling states" mindset is key to groking many quantum algorithms.
Returning to this video 6 weeks into my quantum mechanics course at uni has been very interesting. :)
It's made entanglement a little more clear
this channel is great! it deserves alot more publicity and i'm sure soon you'll get there if you keep making videos like this ;)
Great job! I hope your channel continues to grow. You put out high quality videos on difficult, original content.
Bro you need to make some more videos don't stop. Your videos are so awesome and I love watching them. You make me feel so much smarter after watching them and I wanted you to know we all appreciate your time and effort you put into these videos
I don't get it. WITCHCRAFT!!!!!!!!!!!!!!!!!
Ryan Dunegan Catholics... always the same.
Ryan Dunegan the guy who is talking does not get it, so don't worry you're not the only one
I act like i understand it all when i dont understand shit
+MrArbeter Who the hell would do that ?!?!?! Not me..... really..... That's just dumb....
You missunderstand me man i act to my self that i understand it .
I am a CE/CS major and your videos are really putting some light on topics that i never knew about. Thank you!
+Frame of Essence
I watched one of your videos.
It's awesome. The way you explain things is just for me.
Waiting for more about quantum
I figured I mention that shortly after you posted this a paper came out about building quantum logic gates from silicon. We are getting closer to home quantum computing :)
my quantum computer says maybe and nothing else.
That was a great video! Thanks! It was one of the best quantum circuit descriptions I've ever seen. Please make more videos, I want to know what you know!
I wish I would have found this chanel earlier. I found this video and after waching 100 videos on quantum computers, this is the only one that helped me to understand how a quantum computer would work. So I went back and watched all your other videos and they are all great. So I subscribed and I can't wait to watch your next video! New favorite science chanel.
"Quantum computers can't do anything that classical ones can't"
TRUE RANDOM NUMBER GENERATORS
The halting problem
Rick and Morty joke at the end
makes up for the lack of pikachus
I read that as Rick and jorty moke
oh my god, this is probably one of the most underrated channels on youtube right now! u deserve so many more subs!
Best videos on the subject ever made! Please make more!
How do we know this really happens if attempting to observe it prevents us from observing it happening?
Also because quantum physics I both understand this and do not understand this at the same time.
Example: Put 100 qubits through the Hadamard gate and measure them all. About 50% of them come out 1 and the other 50% come out 0, because statistics. Do more experiments and you start to figure out the structure of what the qubits are doing in-between creating and measuring them. It's mostly just abstract math though.
You missed what I meant :P You hide a dog in behind a screen with a bone. 30 minutes later you take the screen away and the bone is gone.
It is a plausible assumption to say the dog ate the bone. But how do you know? He may have buried it because he wanted to eat it later. The result is the same, the bone is gone.
Oh I think see now. I really depends on your interpretation of quantum mechanics. No one really knows what happens when a qubit isn't being observed. It's kind of like asking when a tree falls in a forest and no one is there to hear it, does it make a sound? It's actually a little more like: if we see a tree in the forest, come back a week later and see it lying down, and no one in history has ever seen what a falling tree looks or sounds like, did it make a sound? If it helps with your understanding of the problem or with the math in some way, maybe it did? So with the dog example, I would say that all the evidence and previous experiences say that the dog ate the bone. But in the end, unless we can dig into the ground to check for a buried bone, it doesn't really matter what the explanation is since the results are the same. Physicists haven't figured out a way to check for buried bones.
Oh I understand. I just like asking the question because it annoys people. As for the tree. Yes it does. It produces a sound wave. It is just no one hears it because there is no one there.
+Falney if quantum mechanics wasn't experimentally provable, it would've been as popular as it is.
the first experiment (and maybe the only? I don't know) that proves this is Bell's experiment, here en.m.wikipedia.org/wiki/Bell_test_experiments
Remarkably, this is the first video on the internet that even attempts to explain quantum computing.
Typical "explanatory" TH-cam video on quantum computing: "Yeah so you have these qubits, and the number of states they can be scales exponentially with how many they are, therefore QUANTUM COMPUTING! derp". And then the Dunning-Kreuger viewer goes like "oh hue hue I guess I understand exponential scaling therefore I understand quantum computing now". That's why the title of this video is so appropriate.
Although tbh I still don't understand why quantum computing is useful after this video
I think it just allows ways for us to change the nature of the solution process. It creates a new logic system instead of making a way to use the old logic system faster.
there are plenty of other videos that explain it. just a bit arrogant of you to assume that if you don't know something it doesn't exist.
Prime number factorization. It effectively breaks most of our classical encryption algorithm.
Attempts and fails, but algorithms are simple.
That last bit about twisting was surprisingly helpful! Thank you for the great video.
I just found this channel, man I wish I found it sooner, this is some high quality stuff you got here! Keep it up mate :)
i got lost around 6:25
+Ac Ze Haha, I'm literally paused on 6:22 at the moment - lost
+DJ37558 learn this or you will turn into a grandma
Ac Ze I got lost before I started the video. I came here to get, at least, pointed in the write direction. No success.
Just when it turned Quantum hahahaah
Your right, I don't know how quantum computers work.
+Joshua Duffy You bothered to use a comma and
Fungi 331 😁😁
Enablingbuzz sh*t. 😁😁😁
Just want to say that I have watched tens of thousands of youtube videos(most of them edu vids from channels like Sixty Symbols and Smarter Everyday). But after watching this vid, this is the FIRST TIME I have EVER bothered to log in to like and subscribe. It doesnt mean much, but it does go to show my appreciation to the uniqueness and the quality and your effort in making this video. You deserve a ton of subs and likes(Unless some other guy beats you to what your doing, of course). But for now, you are the best.
This was so awesome! I love the way you did not make it boring. Thanks :)
so you still didn't answer the question at 9:24
+VMEcycle6 I tried to starting at 10:13
+Frame of Essence
yeah I mean the metaphor by using multiplication seems simple.
But wut I don't understand is in classic computer the gates in "C" and "D" ain't supposed to change input "X" but only change input "Y".
So I'm just guessing when you changed the same logic into quantum gates in "C" and "D" it's actually doing the opposite? They don't change input "Y" but they do change input "X". Is that what you're sayin?
If that's the case, could you please explain more about the quantum gates at 12:12 ? What's the logic in those gates that changes input X rather than Y? Thx
+VMEcycle6 This is the confusing part. It's actually the reason I admit defeat just before showing the gates. But I'll try to give it another go.
The circle and cross by itself (like in circuit B) is the Pauli-X gate. It is analogous to the classical NOT gate, but it really just flips a qubit top-to-bottom. It's easy to describe as 'flipping', since a single qubit has 2 degrees of freedom, so we can describe it with a 2-dimentional transformation.
The circle and cross connected to the other line (like in circuit C) is the Controlled-Pauli-X gate, but most people call it the CNOT gate because it's shorter. It is analogous to the classical XOR gate with one of the inputs branching out. I originally described it as "flip qubit-y only when qubit-x is 1", but that implies a causal relationship, which doesn't actually exist (so I kind of lied). What this gate actually does is flip the combined state of both qubits. This combined state is pretty much qubit-x and qubit-y molded into each other. It has 4 degrees of freedom, so it's really hard to describe what it's doing. I guess it's kind of like a 4-dimensional flip? But when you pull qubit-x and qubit-y apart again after the flip (unless they're entangled in which case you can't), qubit-x or qubit-y might have ended up individually flipping, unless one of them was symmetric about the flipping-axis and stayed the same.
TL;DR version: the gate actually flips both qubits, but sometimes one of them is aligned with the flipping axis and we don't see a change.
This is hard to describe without using linear algebra. If you want to learn more, you can try looking at the textbook that I linked to in the sources section of the video description. It teaches the math behind it all, which would hopefully make more sense.
Thanks, that make more sense :)
No problem, glad to help
15:00 couldnt that be fuckin amazing for pathfinding in AI? It could check each "square" in an area much faster than a classical calculation could. Same goes for AI in general.
+Baleur It might also be used for rendering algorithms. Quantum GPUs( or coupled with regular GPUs) might be incredibly powerful.
+Tudor Oltean really? I heard that for our use in gaming quantom computers wouldn't perform better. Maybe we'd need to change the way of programming it?
+Shortyman17 I am a developer, what do you mean by "gaming"? Quantum computing is slow for many things, quantum computing only has limited use so far. Most software, including games are coded using encapsulation, behaviour trees etc which makes it a huge pile of mess, so it is not linear on the macro scale. But on micro scale, software are basically linear. Quantum computers are not able to handle that mess.
The only way I can see quantum machanics improving performance is that is to use them along with classical programming whenever they benefit the performance.
Classical computing is a heavenly gift and it would be stupid to just toss it away because we got a fancier new toy. Integrate them together & you outperform both.
NebulaBlackF That is what i suggested on one of my previous comments. Maybe have dedicated "quantum" chips on future hardware, along with more standard components.
Tudor Oltean Yeah, I think that's the way we're heading. There's also biological computers in development.
I guess we will have triplet-hybrid computers in future. (Classical/Quantum/Biological)
This post was published two years ago...but first one I found that actually explains how the 'logic' of a quantum computer can solve. Very usefull and a video worth going over many times.
Awesome video! Seriously, the best explanation I've seen yet. Thanks!
there better ways of explaining logic gates.
deserves the like
That's the best explanation of the Deutsch algorithm I've ever heard; thanks so much! You should have way more subscribers; I'll try to spread your channel around to my friends.
Man! Best video on QC so far! I've watched IBM's videos and what not! This actually is the best intro. Why don't you make more videos in the series explaining the technical stuff in somewhat more depth?
jesus did it
Jebus you did it!
Jebus & Quantum=Satan is once again stealing half of God's Truth & manipulates it so he can seem like he's worth something someday. 😁
So essentially what quantum mechanics does, as i understand it is... take a Schrodinger's cat principle (saying that outside observation can influence results, but before they are observed the answer is in both states at the same time) as well as take hard probability numbers of something happening, round them up and spit out a value that our human brains and simple computers can comprehend. Very interesting, thanks for the vid, ive always wondered how da fuck can 1 be a 0 at the same time, but basically since this actually works it takes advantage of multiple dimensional outcomes, which means we actually live in a reality that splits every time we fucking make a choice or observe something happening, meaning a tree falling in the woods makes no sound if nobody hears it... =O mind blown lol but seriously, i love quantum physics, the only science that makes sense in this chaotic world, the only science that says we have so much more to find out about the workings of this
world... I wonder what would happen if we somehow plug in crazy figures into a quantum computer like Fractal formulas and the golden ratio, would it be able to calculate and somehow show us the super order of things... the actual structure of life universe and its development, cause those are the magical math figures and sequences that explains the chaotic order of nature, same as Pie or Fibonacci sequence...
P.S. google is making an actual personalised quantum PC, so soon we will have computers that are smaller, faster and much smarter, which can bring about a ton of scifi stuff into reality, namely actual AI, fingers crossed we dont get Terminators XD
quantum computers are deeply reliant on gate engineering for operations. new types of components are coming out every year so we've not really seen the ultimate nature of how processing will work. not all gates have the same limitations shown in the above.
a good place to start getting a firmer understanding of the physical process is researching pi josephson junctions which are used in many research quantum computer systems and many derivative devices have been popping up allowing us to cheat the rules in various ways.
vovapsix you know we will, a-hole.
Underdawgification Awe- slam! Good job that was AWESOME. 😁
I'm starting to form the impression that q-computers computing many problems simultaneously is a wrong analogy.... If i am wrong please help me understand.
It seems to me that referring to the superposition x-qbit shifting from "left" to "right" depending on how the y-qbit is superpositioned is only displacing the problem presented in the video... It still solves things one at a time does it not? The process described only explains how the machine operates but not necessarily how it actually does multiple computations, if it even does... Am i following?
This was the best video about quantum computer I have found. Great work!
This has to be the most cohesive and easily grockable exploration of Quantum computing I've ever seen!
Thanks for this intro, I am planning to learn the math behind this and create some interesting algorithms using Qiskit.
Excellent job on the portion you were addressing
Thanks so much for this video! Really clear and nicely put together. I'm just starting to study quantum computing and this really helped me understand qubits.
awesome video!
really well made, both content and production value.
A little bit closer to understanding this, well a lot for me. Thanks for a very good explanation.
By far the best explanation of QC on TH-cam.
You sir are a gentleman and a scholar.
this is my first video on this channel, and it's well made' funny and smart.
props and subbed.
This is one of those things I just really want to at least get somewhat of a grasp on, but it always feels like I left with more questions than answers at the end of it all. Anyway good video, gave some good insight!
This is BY FAR the best video about quantum computers I have seen!
THANK YOU. i still don't fully understand quantum computing of course, but this took me a serious leap further than anything else i've seen on the subject, which all tend to leave off after explaining what a qubit is, and that the advantage of quantum computers is performing some types of calculations in fewer steps. here, however, we actually see something of what comes between, how we get from one to the other; and by what sort of artifice meaningful results are extracted from superpositions.
This channel should be recommended to more people. I'm glad I found it
You illustration is really inspirational and excellent. Thank you very much.
Can you please do a video on Grover's algorithm? It is very interesting and applicable, but also pretty difficult to understand. You seem to have a very good grasp of this concept, and I think an explanation would be very useful! Thanks!
This video is great. Most videos only talk about qubit but never explain how quantum computer algorithm works.
Thanks for the video! I'm going on to grad school, and one of my prospective projects involves quantum computation. Needless to say I still don't understand it, but this gave a nice idea of what's going on.
I've never seen a satisfactory explanation of how to read qbits before, but this actually made a lot of sense, thanks for explaining it! Also, as a programmer, the possibility of turning an optimal O(n) algorithm to O(sqrt(n)) is quite tantalizing. Obviously it's not applicable in every case (or even most, I don't know), and would require far more ingenuity, but still...
Crazy INTERESTING. THANK YOU FOR YOUR AWESOME VIDEO. Quantum Mechanics and the math behind it has always interested me. This is a great explanation of a very tough topic.
Yours is the simplist explanation I've found.
Finally something that i could understand, that paper flipping trick still amazes me even though i had enough amusement with my own example of it.
Outstanding video. Im in a state of confusion and you lost me 5 minutes into the video but something had to sink in :) Subbed
You should receive the Nobel prize of Explaining for this video. They should make this award after seeing this video.
Best explanation so far toward understanding it! Thank you
Thank you for waiting ;)
You definitely deserve more recognition
Your presentation made the complex quantum task understandable to many. But, like the saying, our understanding will indicate no understanding. Overall, it's a marvelous video and I wish for to advocate for it's propagation. Well done!
This is the most simplified material related to Deutsch's algorithm on the Internet. It is a good place to start with if you wish to understand the have an insight into quantum algorithms. Thank you for making an effort to simplify the complexity behind the quantum computers and their algorithms!
Thank you, this is awesome. I finally get some grasp on how it actually works, and not just that it "works exponentially faster"...
This video is amazing! It so simple, easy to understand and follow.
Great job!!! I love this! Quantum PCs here we come!!!
Last scene was a rick and morty reference to the butter episode! Epic
15:23
5 mins in and this is already a very informational, but fun to watch video! :)
So USB phone chargers are basically in entangled superpositions, right? They are both right-side-up and upside-down at the same time, but they are also entangled with the state of the phone so as soon as you try to plug them in, they collapse to the orientation opposite the phone.
This video is amazing.
Thank you very much!
We need more of these videos
one year old video about computers
still relevant. Keep up moore.
For a different conceptual way to look at this. I personally like to think of this problem as follows. You have four possible measurement outcomes (0 or 1 for each output) and you are trying to distinguish two possibilities. In the classical case (when you only input 0 or 1) then the two cases don't give different answers (you are asking the black box a question that both cases answer the same). When you feed in states right and left, you are queirying the box in a different basis (asking the box a different question) but this time the answers for your two cases differ. Basically think of the two options as let's say a banana or a kiwi, and you have only one question to distinguish them. In classical case you can only ask if they are a fruit (you cant distinguish them because they both say yes) in quantum case you still only get to ask one question but you can ask what colour they are.
That was a good video and cleared a lot of stuff up, Most of the videos on quantum computing go: "'qubits', like 1, 0, & both, that means more power?, FUTURE!" This one was actually helpful.