Quantum Computers, Explained With Quantum Physics

[@mjnz]

Finally, someone was able to break down quantum computing into something more easily understood such as quantum physics.

[@funforthought1260]

😂

[@AB-1023]

I see what you did there

[@cinnybun739]

😂

[@carbon_no6]

You needn’t make light of this area. Sure it’s small, but I don’t think you fully grasp how extremely massive this field is! The gravity, of quantum computers is currently very empty!

[@stevelk1329]

But why does 10 cubits require 16 thousand binary bits for equivalent storage? Is it this: if 'q' is the number of cubits, equivalent binary storage required ( to store each of the 1K results?) is q x 2^q? This is 10240. If our binary storage is always doled out in powers of 2 then the *least* amount required to hold 10240 would be 2^14 or '16K' (ie 16384). Is that right? I'm guessing it is not...

[@Erik-pu4mj]

For anyone interested in learning more about quantum computer programs (ideally familiar with Linear Algebra first), IBM has a number of guides to quantum computing, a program simulator, and online access to a real quantum computer--all free. You can literally run programs on a quantum computer in New York from your home. Or Antarctica (yes, someone actually does this from Antarctica). Thought I'd spread the word a bit. Have fun!

[@knightwik]

How much of linear algebra should I know first? I am learning it now and am have just finished linear transformations

[@DarkShroom]

wow, it seems it might be i signed up.... the other ones charge 30 cents or so a run

[@truths86]

What is it used for

[@chrisoman87]

Link?

[@cellardoor9882]

Can it run crysis

[@MichaelSavidgeStoryteller]

I don't exactly know how I got into the "Quantum" rabbit hole, but it's a really fascinating one! I'll admit, I don't understand all of what is covered; I'm probably going to have to watch this multiple times for it to make sense. But this is really fascinating and exciting to see unfold. This must be how those of my grandparent's generation felt when desktop computers were becoming more commonplace!

[@TehScareM8]

nothing wrong with not understanding it, willingness to learn is!

[@vickiehenshaw1890]

It is fascinating to get old and think back to how the world has evolved in many ways ….this being one of them. Some changes in the world are fascinating and good, others….not so much 😐

[@michaeltypaldos7246]

Same, I am just here for the headache.

[@ephre]

the double slit experiment and bell's inequality might help.

[@MichaelSavidgeStoryteller]

@@ephre Hmmm, bell's inequality and the double slit experiment...never heard of these before! Thank you very much for the recommendations 😀

[@ShubhamSingh-lq5bl]

Actually, it was not Feynmann but his colleague, junior and friend Edward Fredkin. It was Fredkin who explain the language of the computer to Feymann and in return, Feymann helped him understand Physics. Fredkin wrote the very first reversible algorithm, and it was his idea to build a quantum computer. He even went further and wrote about the simulation theory of the universe.

[@SenapatiM96]

Is there a good book/article regarding it?

[@ShubhamSingh-lq5bl]

@@SenapatiM96 not that I am aware of.

[@emmanueloluga9770]

Really? I didn't know of any of this. I only knew of the Fredkin gates and his influence on Wolfram's finite state automata

[@phonkphonk]

@@ShubhamSingh-lq5bl could you share a link to the panel or any other reference?

[@Karma-The_Eagle_philosophy]

You can try jack.D.Hidary's book Quantum computing: an applied approach

[@jrdeckard3317]

Quantum physicist walks into a bar. Bartender says, "Weren't you here tomorrow?" Quantum physicist says, "No, but I'll be back yesterday."

[@SavingSoulsMinistries]

That was the funniest unfunny Joke I have ever not heard until I heard it

[@folfol3008]

The content is very professional

[@payvibaby]

But he used the word “alien” to describe quantum particles.

[@folfol3008]

@@payvibaby lol, it's alien tho considering how much more there are to know about them! I would say a lifetime isn't enough. It's the legacy of ages. :)

[@userou-ig1ze]

@@payvibaby it's a quantum alien, so by definition it's way cooler, will genererate you money and makes your statement converge to 'max professional' by nature

[@-_Nuke_-]

true! of course it still falls victim to quantum woo gibberish but its to the minimun so that's ok I wish someone could explain how a quantum computer REALLY works, instead of showing us these visualizations tho

[@folfol3008]

@@-_Nuke_- Read books

[@QuantaScienceChannel]

Misplaced hype around quantum computers often stem from a grave misunderstanding of how they function. In a column for Quanta, computer scientist Scott Aaronson (featured in this video) disentangles these oversimplifications: www.quantamagazine.org/why-is-quantum-computing-so-hard-to-explain-20210608/

[@alanmcintyre9296]

Thank you for creating concise content that doesn't indulge in the hand-waving quantum hype!

[@starbase51shiptestingfacil97]

What makes quantum computing so hard to explain? It's just pure science fiction fantasy. As in there is actually no hard details or explanation of how any of it would work, just wild claims. Things you have never heard about quantum computing. The idea was manipulating quantums to make custom made atoms with ideal properties for even better transistors than silicon. Obviously that's in the realm of science fiction fantasy. At best what you can do with real science and engineering is purify silicon. The tiny amount of trace impurities may actually be abnormal silicon or defect at the subatomic or quantum level. That's called a theory. It's not been verified. At best it's an educated guess. There is actually no hard details for quantum computing because it's pure fantasy and why it's difficult to explain or understand past wild claims.

[@svendkorsgaard9599]

@@starbase51shiptestingfacil97 Quantum computers are based on very well tested and verified science. We already have a working quantum computer that anyone can use, at IBM. We don't live in the 18th century anymore, wake up!

[@davidsimpson9647]

@@svendkorsgaard9599 Well said!! This technology will transform human civilisation.

[@alanmcintyre9296]

@@starbase51shiptestingfacil97 Thank you SO much for taking me back to the old days of "reading incoherent trolls in the IOP article comments!" Good times!

[@michaelleitner4392]

Keep up the great work scientists! I don't know much about physics, but I'm proud that there are good people keeping us moving forward.

[@Guitarsloth]

More than you know my friend. My physics professor in university was a researching nuclear physicist and told us things that really made us question reality and how everything is so complex yet so orderly at the same time

[@g.g2248]

Thank God he's the real genius that gives us everything and knows everything until the end of time. We are just small idiots without him

[@SirFaceFone]

This channel is so underrated. It's one of the few channels I have the bell on.

[@shaggyfeng9110]

This is what the bell is for.

[@bidyo1365]

i did not activate their bell but we are the same, i think i only have less than 3 activated bells, looooooooool

[@tem6725]

Same, but I really hate the bell lol. I don’t use it at all.

[@kermitdfrogz]

That, and any twerk contest. I kid. Sort of...

[@jimlthor]

I work on old powerplants, and the old blueprints, which we still use, all have handwriting like that. Pretty cool stuff

[@LemonChieff]

1:44 That is simply the most beautiful handwriting I've ever seen. (And/or an average font)

[@ithaca2076]

honestly

[@jby382]

Kudos to the motion graphics editor in this video. They really aided comprehension here.

[@topfeedcoco]

This is the BEST explanation I've seen in almost 2 decades of just HOW a quantum computer actually works. I've understood the concept, but for the laymen this is the most useful breakdown I've seen, and in just under 10 minutes, well done sirs.

[@dougaltolan3017]

This is much more of what it does, not the nuts and bolts of how it does it. But then you don't really need to know about stoichiometry to drive a car (that's fuel air ratio) There is one online that you can play with for free, and a simulator too if you don't want to queue. Searchb IBM quantum

[@alst4817]

I’m reasonably intelligent and well read, but I reached the end of the presentation with no idea what I was supposed to get from it. Sigh, back to the drawing board 😅

[@-danR]

@@alst4817 I appreciate your honesty. There are 3 sets of people who effusively complement these sorts of deep-dive pedagogical nightmares. 1. People who already understand, or have the background to quickly understand. 2. People who want to make social points that they understand. 3. People who got it completely wrong but it suffices them that they _think_ they understand.

[@aristotleolympiada4540]

Humanity is always at its best when it walks towards darkness. Glad to see people out there doing what is truly hard.

[@userou-ig1ze]

Please elaborate 'darkness' hehe

[@aristotleolympiada4540]

@@userou-ig1ze Unknown and unpredictable. Science is way too much about politics and admin these days.

[@haveagudday8068]

I know right! This is the true science without all that political bs. Just pure excitement, curiousity, and real work.

[@georgehilario3544]

You all made it political, it wouldn’t be a surprise at all that y’all would use the qubits as evidence of non binary gender

[@pranavjoshi7400]

two types of people: 1. Those who understood it 2. The honest folks

[@schmetterling4477]

The 3rd type is the one who can't but think in more than two categories.

[@liberatednow6013]

Wow, this is awesome! Can I ask, what software is used to make these animations?

[@QuantaScienceChannel]

Thanks! Our animators used Cinema 4D and Adobe After Effects. Some of the effects were also done using Trapcode.

[@liberatednow6013]

@@QuantaScienceChannel Thanks! Will certainly be learning them this summer:)

[@aznanimegob]

@@liberatednow6013 Ill be learning wondershare (beginner)

[@WashimNeupane1]

@@liberatednow6013 q

[@OfficialGOD]

@@aznanimegob ditch that go for Adobe premier

[@alsojuja]

Thank you! This is the first explanation of quantum computing I've seen that goes to this level of depth but is still understandable by the layman who knows a little bit about quantum physics. Most sources just say "superposition, voila."

[@yafz]

I think this high quality content with zero hype will be very motivating for people that want to study this topic properly. Thanks! 👏

[@harmonygritz2839]

This is the end, beautiful friend This is the end, my only friend The end of our elaborate plans The end of everything that stands The end No safety or surprise The end I'll never look into your eyes again..........................

[@ReynaSingh]

These videos are so good!

[@SahilP2648]

You are here too. I literally just now saw your comment on another video. I forgot which video because of my trash memory. Btw your videos are very interesting, I subscribed. Other than the Valorant agent Reyna, I have never seen that name before. Quite cool.

[@MrPrush-ji4gs]

You’re so good

[@ram42]

I keep seeing u on the videos I watch aha

[@jorgepeterbarton]

The call to the IT department when its not working: -"have you tried turning it off and turning it on similtaneously at the same time?"

[@IMakeThingsonPaper]

nothing is explained about quantum computing in this video

[@mohamedzarif4473]

[@Xanrax]

What an amazing country we live in where scientists who are working on this and my neighbor who can't read or write have the same rights and law's. This is truly a just and an amazing country. Idk why it popped into my head but it did.

[@JonathanCandor]

9:13 when a physicist says im not sure if there's any money to be made that's when you know there's money to be made

[@henriquefern67]

Will be made money by 2029. Ibm will make an operational Problem solve quantum computer in 2029.

[@richbob9155]

@@henriquefern67 there are already companies making money off this and have built servers with quantum computing. 2029? What are you on about?

[@henriquefern67]

@@richbob9155 none of one Quantum computers are really useful. And many agrees that it may never be really useful. Its more like fusion reactors: always 30 years away. But ibm claims that by 2029 it will be helpful. But many scientists still doubt. Today its only hype

[@silverspin]

@@henriquefern67 physics student here (at uni), and truly the hype has never been greater, they are literally using "quantum" as a prefix for such dumb crap and metaphysical explanations and sci-fic movies, QC will only be useful when we can move much past the number of qubits we can entangle, and that too for niche computational problems and simulations

[@ramusoder5411]

A particle can be two different things at the same time and in the same exact space, just like Schrödinger's wave superposition and Born's particle superposition. Two completely different meanings attached to the same math.

[@schmetterling4477]

That's cool! Except... there are no particles and you weren't paying any attention in high school science class. ;-)

[@ramusoder5411]

@@schmetterling4477 ;)

[@BlueSquad00]

been watching documentries on quantum theories since i was eight but have to watch this a few more times to fully take it in

[@mgabrielle2343]

So basically what this means is that every particle has a destination, given to it, what it is going to do is pre-determined into its if I may call its DNA, so all we are doing is looking ahead into what is to come and so we can get the results now what is to come, so if we were to get signature or its dna or pre-determination signature, and look into every particle's data, we get the results of how many particles in that object are spinning to left how many are programmed to spin to right at any given time, so we can analyse ahead of time by reading the programme now, so we know what those particles will do in future, this way we could use a quantum physics or computer to predict future events and know the next weeks lotto results in advance, only problem is can someone let us have the balls to examine every single particle it is made of each of those balls representing different lottery numbers, then we could predict the number most likely to outcome, but the problem comes we do not know in advance when the lottery machine "gate" opens which allows a ball to drop through, so time is also very important to nano or femto second, there is still some random unpredictability that depends on precise time a gate opens, so in the end do we need to delve so deep into quantum computers, the answer is yes, we can ask what might happen to earth in a million years time instead of guessing. A quantum computer should be able to govern the exact date and time the earth will be destroyed, that is one certainty no one can deny. so for a start that quantum bit is 1. So if we take a DNA sample of something say a male sperm we could interpret what that sperm will become if it was allowed to mate with an egg. AI can be used to help us create the image of that person who will be born, will it be a male or a female, how beautiful the baby will be what colour will be the eyes and skin, etc. Quite often past events can also predict future, so I did create a machine that enabled me to win many lottery number matches on a simulated test, I used past data results to predict future numbers, I never gambled but would have won many 5+ matches as well as many Jackpots in one single year but it would require a good deal of money layout, you would need to spend money to buy at least 10,000 different number combinations, with highly increased odds of winning, So if you were to go and buy ten thousand lotto tickets each week the task would be physically impossible given that each ticket needs a good few seconds to process and print a ticket, unless one may be able to now buy them online, them online but you still have to input your numbers that your machine you created predicts, based on kind of quantum logic.

[@boozlightyear]

In my work we build simulation models. A very important part of building models is the use of assumptions - information that is not necessarily true or accurate but allows the model to work well enough to produce useful results. Quantum mechanics has indeed produced useful results over its 100 year history but there is a catch. We have forgotten that the assumptions of the quantum model are not actually laws of nature: they are ASSUMPTIONS. surprise surprise. Quantum physics is a mathematical model created to understand the behaviour of the election as observed in the hydrogen atom. These assumptions while they "work" defy common sense and the greater body of physical observation. Let us not confuse that they are assumption and not reality. There are classical explanations for the so called proof experiments by modelling the election in a way that appreciates it with form and substance. The unveiling of this true understanding will be the dawn of a wonderfull revolution in science. Let us stop chasing mirage assumptions in the hope that they are real

[@edh2246]

I can’t say I understand it, but it does give me a deeper appreciation.

[@WlerickBigotOfficial]

Quantum computers are the new Fusion reactors. See you in 70 years guys.

[@quixoticcarrot3998]

Better 70 years than never.

[@LeViIain]

It's like convincing people to give you hundreds of millions of dollars to write Pi in its entirety. Now I know why Germany now has a "quantum computer". It's just a really clever way to steal tax money.

[@osrsnoganno]

U ment 70000 years?

[@WlerickBigotOfficial]

@bug404 the self-teabagger Don't expect too much, quantum computers won't be a miracle or a "true" AI like in scy-fi movies. Also, we don't need them to build the "other", since we already have many of them (already built or in construction) aroung the world right now (ITER in France, Russia, Germany, China, India, USA with Lockeed Martin and many others, ect), it's just that they can't maintain the chain reaction more than 30s x') And still can't produce more energy than what they require to work yet. With luck, in 30 years Fusion reactors will be a reality before the first commercial quantum computer.

[@LeViIain]

@thebug404 Narcissist Bullshitter When a "revolutionary" invention is announced but the only ones buying it are governments, it's pretty obvious it's a scam. Why would google build and sell it instead of keeping it for themselves? Why are all big tech companies working together on the projects? These companies would never reveal their secrets to their competitors. Unless there's no secret and it's all a ruse to steal tax money. Keep on believing my friend.

[@TheLivirus]

Best video I've seen so far explaining what quantum computing is. Most try to simplify using confusing analogies.

[@Present4]

Two questions from a total novice 1) Does this open the door to -1 possibilities in previously binary computer programming? 2) Does the relationship between particles and/or waves become more of a predictable enmeshment rather than simple entanglement when that relationship has been definitively observed?

[@XGD5layer]

1) You can imagine binary computers using the values -1 and 1, while quantum computers could use i, -i and everything in between as long as you don't observe the state (you might imagine e^i representation of a circle) 2. When something is quantum is observed, the quantum state has definitively collapsed.

[@lun7n]

@@XGD5layer so that’s why we can’t see more dimensions…

[@isatousarr7044]

The power of quantum computing lies in its ability to explore many potential solutions simultaneously and find optimal solutions faster than classical computers. However, building and maintaining quantum computers involves significant challenges, including qubit stability and error rates. Despite these hurdles, the potential for quantum computing to transform various fields makes it one of the most exciting areas of research in modern science and technology.

[@Gibbs2Go]

I don’t know why I’m here. I don’t even understand how regular computers work.

[@britneystarr3904]

Same! But I am fascinated nonetheless….

[@HeisKelvinHov]

This is basically saying that nothing is random, if you have a construct of every possible outcome, quantum mechanics is beautiful

[@basisTermium]

That quantum computation animation thing was really great. I wish you could made more about it

[@MadMoskito23]

My brain isn't braining...

[@Charlene.888]

I know what you mean! 😂

[@AdityaMr66]

Great content! But this video leaves me with more questions though. Eg, how would one describe the concept of Amplitudes mathematically? Why would you need 16000 bits to describe the outcome of 1024 qubits?

[@stefanschnabel2769]

Good question, the video didn't explain that. One classical bit can be in one of two states and 10 classical bits can collectively be in one of 2^10 states. But one Qbit can be in a superposition of 2 states which I suppose would classically be stored with 2 complex floating point numbers and 10 Qbits can be in a superposition of 2^10 (classical) states which would have to be stored with 2^10 complex floating point numbers. (I am not an expert, but I guess technically due to normalization and irrelevance of the phase it could be two fewer in both cases.)

[@Superpellexl]

Amplitude is a math term and it means the height of a periodic function. E.g. 2*cos(x) has amplitude 2, and 3*e^(i*x) has amplitude 3.

[@Superpellexl]

I am also wondering about the calculation of bits though!

[@WannesMalfait]

Mathematically we can think of a qubit as a vector in C^2, then when we have two entangled qubits you take the tensor product and need a vector in C^4. Add another qubit and you end up in C^8... So the dimension goes up by 2^n, with n the number of qubits. The output of the algorithm is this "state vector" from which you can read the probabilities. If you want to simulate this on classical hardware you're essentially doing matrix multiplications with vectors, but the matrices are of the size 2^n by 2^n, which is extremely slow and requires too much memory for n>32 or so

[@SiggiJacksn]

Due to the superposition the assumption could be that a classical computer would have to store all 2^10 numbers at the same time. So my guess would be that on a computer integer numbers come in 8, 16, 32 and 64 bit packages. Since 8 bit is to less, the next step - 16 bit (called short) - is considered to store a 10 bit number...? So take 1024 16bit numbers and in order to store all possible states at once

[@huss03]

How did I know before watching this that I would not be any the wiser after watching this

[@ddbear8786]

What is often not explained (including in this video) is how extremely difficult (or impossible) it will be to program these quantum computers and the entanglement interference from the ambient environment. Information = energy. The laws of thermodynamics will hold and ensure that a tremendous amount of energy has to be input to harness the computing power.

[@ADreamingTraveler]

Remember how big and how much energy old classical computers had to use? Now look at your phone in your pocket. Things will change

[@Terrakinetic]

Watching these videos makes me feel like I'm taking the 'Smooth Talker' perk in Fallout 2: I get +1 for intelligence but only for the purpose of dialogue and not for any practical understanding or use.

[@lamcho00]

Really interesting, got me curious of how exactly are those amplitudes manipulated. I think it would be great if there is another video with a simple example.

[@davideizzo2683]

Probably through electromagnetic impulses and effects similar to magnetic resonance but I could be wrong

[@rnichol22]

Through predetermined rf microwave signals

[@DespaceMan]

Down to a nutshell for people who don't understand quantum math just imaging your current understanding of binary bits as if viewing something only in 2D like for example a comic or a book, now imaging you're given a holographic 3D television. That's the leap between the two, it's the next level the next spike of technology growth.

[@illogicmath]

The more videos I watch about quantum computing, the less I understand quantum computing

[@LuisLopez2]

I find fascinating quantum computers look like some throwback to 1900's steampunk.

[@alex_romancino]

This video is so well done, approved (I'm a quantum optics physics major)

[@rajnirani7772]

The content on this channel is always good and simplified.

[@vijaysubramanian2037]

Great video...Props to the animation team for making such good visual effects :)

[@aleeah3532]

I like the ending statement about when we “have a quantum computer to play with”, makes me look forward to what our world will come up with next 🥳

[@davidroe4213]

I would like to become a Quantum Physicist, this science is truly incredible.

[@chuco915C]

Good luck!

[@davidroe4213]

@@chuco915C Thanks!

[@sirjohn6299]

When you do be sure to tell me the secrets of the universe that you discover.

[@timinator1178]

I hope you're good at math. Like, really good. It's tough stuff. I thought I was really good at math until I encountered quantum mechanics and then I realized nope, I'm just a little better than average.

[@davidroe4213]

@@timinator1178 Yeah, the maths is difficult, but I think it is possible to learn and use those difficult maths. I'm good at math, but I can always get better. In my free time I try to learn more about quaternions, topology, calculus, and more about all other branches of mathematics, I realize that in order to figure out quantum physics, I'm going to need at least above average skills in math.

[@ensyw5971]

6:31 where does 16,000 come from??? how do you get to that number? lol, you just say things without providing any explanation to anything.

[@void5239]

Amazing. I can’t wait to see what humanity can learn from further exploration into the quantum realm.

[@alejandrosanchez9258]

Quantum computers will probably be used for A I

[@void5239]

@@alejandrosanchez9258 agreed! That would make AI a multidimensional form of artificial life.

[@skmanth6194]

@@void5239 imagine playing video games on quantum computer.

[@Yodeviouss]

Humanity? You mean you human beings ? Us GODS don't need computers

[@void5239]

@@Yodeviouss maybe humans are just computers designed by the gods…

[@chefffs]

You experience quantum computing at an infinite scale on acid, it's jarring and I hated it, but I'm happy i went through it, I am here now, I am home.

[@godbearxd]

I was watching another video on quantum computing that said every time you added another Qubit it double the the overall processing power of the computer. If I'm remembering that correctly and that is true that's *amazing!*

[@TheDavidlloydjones]

If you think that 1,000,000 + 1,000,000 = 2,000,000 is a million times the "power" of one plus one makes two, then yes, it's amazing.

[@dracorpgroup]

A classical computer system operates by navigating an endless string of switching between "0" and "1" to arrive at a result, except that it does this very quickly. Still, there is a passage of time. If one were to ask a conventional computer to search for a single page in an endless library of pages then it would search one page at a time, except that it would do this very quickly A quantum computer, when asked to search for one page in an endless library of pages, would conduct that search of all the pages at the same time. This presents a key problem for security systems of any kind. In classical computer systems there is a delay which provides a security zone of tithe passage me in order to defeat the attack or interception. With quantum computing this security zone disappears there is no longer the concept of time.

[@peterfconley]

I am profoundly ill-equipped to keep up..

[@cinegraphics]

This is the best explanation of quantum computers I've seen so far. And I've seen a lot of them.

[@userou-ig1ze]

amazing. It should be twice as long! I crave more high quality quanta videos!!

[@MT-xb3ts]

I have a master's in quantum chemistry, and this video is not bad, but it still reminds me of a vague, nonsensical jargon-filled speech of managers who use programming jargon without understanding it. Also I have never encountered a good explanation, nor have I fully grasped the concept myself as clearly as one would dream to understand.

[@schmetterling4477]

Why are you lying about your education, though? :-)

[@Nagelsmind]

finally understood how the qubit works, great video

[@ashegheaty]

I didn't understand a word of this video but i can say its the best video i have seen on KZbin so far .

[@justingibson6021]

I just realized how dumb I am

[@DaddyLagLegs]

Then you are on the road to becoming smarter

[@brajarajsaha5955]

I hope it will be a breakthrough for the man kind in calculating the future possibilities.. Or in simple language as shown in many movies.. 'It will help us to see the future', by the help of this super fast compution capability..

[@davedave1776]

why would you want to see the future?

[@paulcooper8818]

I've always struggled understand the output of quantum computing and this video has maybe made the answer more accessible. While the Q computer is general purpose in that it can be programmed, the output is more like an analog computer rather than digital?

[@ags5377]

The output is still 0 or 1 hence digital. However the intermediate states that re used for operations are analog. The challenge is to coordinate these analog states to converge with high probability to particular digital output

[@Superpellexl]

Great video! However, could someone explain the calculation of the number of bits at 6:30 and 6:40?

[@PJ-vp4xd]

This video is wrong, 10qubits represent 128 bytes, not 16kb.

[@NaohMkS]

Nice video, quantum computers are so weird to me I find the need to watch many different explanations to reach an elementary comprehension of the concept

[@chris_d-triple_three]

That was incredible. I watched all nine minutes and fifty eight seconds and still have absolutely no idea of how quantum computers work.

[@HansLemurson]

I was just telling some friends how I understood quantum computers to work, and then I watched this video to make sure that the information I'd given them was actually correct. The wave function for my explanation appears to have collapsed in my favor.

[@schlingelgen]

I dont get the expanation at around 6:20 With classical bits, i can use 10 of them to represent values from 0 to 1023 (depending on how you interpret them) - thats 1024 distinct values. Why does it state, i would need 16.000? I know its meant differently, but I watched it over and over, and I dont see any other meaning to the 1024 values of the 10 qubits ...

[@renoufabraham]

Beautiful! I enjoy this type of content when I'm stoned.

[@saskiavanhoutert6081]

Quantum computing is somehow perhaps to be combined with the speed of light of photons so data can be transmitted with the speed of light. Is this possible ?

[@madameshrwit3599]

if we can somehow use quantum entanglement to transport information from a place to another instantly it would be crazy like we can use it between stars or even galaxies

[@Mournful_night]

This is unfortunately not possible because even if you measure a spin of a particle and the opposite spin is therefor existent in the other particle in entanglement, the reader of the particle would have to communicate the spin of the particle to the other observer at a message of or slower than the speed of light, as superposition cannot be controlled and is completely randomized on observation.

[@Godakuri]

Quantum mechanics itself forbids this, as does special relativity. Therefore, its impossible

[@sevader1847]

Before watching this video: I am curious to learn about quantum computing. After watching this video: I'll just stick to watching netflix.

[@trojanhorse2003]

Computers back in the days used to be huge and occupy a whole room just to process or store just a few KB's of data. This reminds me of that stage when humans had just invented computer, I'm pretty sure one day we will be having tablet, mobile or laptop sized quantum computers all around the world. The world would be a whole different place with that crazy amount of computational power.

[@Aqil888]

fr

[@windowsxpwallpaper5851]

I could finally play Minecraft with shaders

[@achosenone44]

9 is really 6 for the sicko demonic lieng loser devil !!!

[@kyron78-x]

Well explained with animations

[@fernandomendoza4925]

Thanks for the visual aspects, they definitely help.

[@emanuelpiza]

One of such future applications is similar to what we call intuition. This will allow computers to have them, just as humans naturally do. Intuition is our inner quantum computer at work... Source: My intuition...

[@ElMayo31]

Less intuition, more, I know of every possibility that can be.

[@abhibro7604]

Plot twist: this computer does not support gta 5 💀

[@Melancholy308]

congrats, you took one of the most complex topics we know of and reduced it to a rinsed internet joke. truly impressive haha

[@BOBBYRawUncut]

Is this something we are trying to make sense of? (The quantum world) but really it doesn’t make any sense because we are not supposed to understand it.

[@quarkraven]

I would argue this is the single best short introductory video on quantum computers. Absolutely phenomenal work by Quanta here. Preskill and Aaronson are top minds in the field by any measure. The information is accurate and beautifully presented. 10/10!

[@nenobug]

Maybe Artificial intelligence technology working with quantum computers can be very important to change our future so that with the help of AI technology our species can survive regularly in space.

[@srsanderson4932]

Your videos are awesome ❤

[@AlexLopez-eh7zx]

Finally , the best video that explains the concepts, I' ve spent months looking thru Quantum vendors, for a good video. This is by far the best!.Quantum Computing Companies, should have this video as general intro.!!! great job

[@tudormuntean3299]

Holy cow, I loved this video

[@bzqp2]

What did this video explain exactly?

[@Eznid]

OK this doesn't explain ANYTHING about quantum computers, it just reviews already very known concepts of quantum physics. Most who talk about quantum computers have no idea how they actually work - either that or quantum computing is a load of hypothetical bullshit.

[@rps714]

I agree, I have been searching websites and videos for 3 days. All say the computer just guesses an answer... like playing the lotto. Wtf is going on here?

[@lepidoptera9337]

It's the former. Most people on the internet have no clue about anything but they like to hear themselves talk. Would you like a mirror with that? :-)

[@RecoveryJimmy89]

So amazing all this New Computers 🖥 & New Cell Phones 📱all this New technology coming out, A.i chatbot is the future and so much more...

[@1DangerMouse1]

I didn't really understand that 😂😂 fascinating nonetheless. Also, please, more content like this.

[@vasillazarov7604]

Good video! at 6:30 I think that your values are wrong. You do not need 16 000 bits to represent 1024 values. One bit represents 2 values. 10 bits represent 1024 values = 2^10. I like the idea to compare quantum with normal computers, but please explain to me how you got the values (if I am wrong) or add a clarification what they actually should be :)

[@TheDeltaserpent]

I never studied quantum mathematics. I figure that you can't value it's scale at something like 2^10 continously due to string theory. I would guess you scale with a "i" value or "l". The more qbits the larger the scale amount due to possible entanglement.

[@laniianl7125]

Great video and amazing explanation from outstanding researchers, thank you quanta magazine !

[@christianza7715]

🎯 Key points for quick navigation: 00:00 *Quantum computer revolutionizing* 00:28 *Subatomic world exploration* 00:57 *Feynman's quantum breakthrough* 01:26 *Classical computers limitations* 01:55 *Birth of quantum computing* 02:44 *Quantum probability differences* 03:12 *Amplitudes complex numbers* 03:38 *Amplitude cancellation phenomenon* 04:08 *Qubits and superposition* 05:20 *Entanglement mathematical relationships* 06:39 *Quantum measurement collapse* 07:33 *Harnessing interference algorithms* 08:31 *Designing quantum algorithms* 09:24 *Future applications unknown* Made with HARPA AI

[@irinaratcliffe1847]

Bad attempt to explain how quantum computers work. Quantum computers use the ability of fermions ( electrons or protons) in the conditions of very low temperature, close to absolute zero (- 273C) to easily change the direction of their spin after any slightest influence ( usually by magnetic field or by laser irradiation). This means that the electron in qubit ( equivalent of "bit" in ordinary binary systems) can simaltanuously be configured as "0","1" "0 and1". This ability is called "superposition" in quantum physics. This activated electron effects his neighbouring electron in another "qubit", which starts to spin in opposite direction and so on, transfeing the information further the line. This coordination between fermions us called "entanglement". Probability is the way of measuring movements of these particles, but not the physical process itself.

[@joserios7024]

I think it is explains here but in broad general.

[@kjeshfdskjhfkjdshfkj]

In terms of of the applications… how about predictive analytics…. Predicting behavior…. Creating simulations and virtual worlds… highly intelligent AI systems, artificial intelligence… there are so many you missed in this video!

[@-half_dead_robot-]

Does it run DOOM?

[@gaon2wheels]

Okay ya I mean that's pretty cool.... but can it run Minecraft with Ray tracing?

[@MyRagha]

"the probability of one event can be increased by supplying a certain amplitude signal"

[@dolce9876]

Great description

[@Q269]

I've had this weird pet theory about creating a "block" of not numbers, but rather computational algorithms. Arranging them from simplistic to complex in a series. The idea being, you send a series of formula through with a substitution of all potential functions being mad-lib'd with this block of algorithms. The result of which, I feel would potentially map out the potential patterns hidden in numbers and by relation the potential avenues of travel quantum computations are utilizing to reach a proof.

[@金鼎邱]

I have a question, how is the value of 2^10 been calculated at 6:23 ? I thought a qubit can store 0,1, and the answer between 0 and 1. Does that mean I can treat the value between 0 and 1 as the third possibility? (for instance, 2) why wouldn't it be 3^10? Also, 128 bytes is equal to 1024 values, why does it say 2^10 is equal to 2 kilobytes? I think I am miss-understanding something, hope some people can guide me Thank you.

[@angelinarobert622]

*walks heavily in the room.* How are the Matrix calculations going? *grins*