Why Quantum Computers Cannot Work: An Overview by Professor Gil Kalai

  Рет қаралды 9,206

Hebrew University of Jerusalem

Hebrew University of Jerusalem

Күн бұрын

Пікірлер: 32
@jessstuart7495
@jessstuart7495 8 жыл бұрын
A lot is riding on the idea that quantum computing is feasible. Those with a vested interest in quantum computing (investors, mathematicians, physicists, researchers) will be hostile towards any views that raise doubt about its feasibility. These days skepticism is heavily frowned upon. I commend the scientists who work towards increasing our understanding of what is possible and what is not possible on a theoretical basis. This is opposed to the vast majority of scientists who spend their careers chasing grant money for the latest research fads; Feasibility is a secondary concern to them.
@Docwiz2
@Docwiz2 7 жыл бұрын
Jess Stuart It's not that there is no room for skepticism, but the problem is that far too many people have already built this stuff and they already are using it. Exactly, why would people test and test and test things to waste time with it? IBM has a website to test code. Microsoft is using their Topological Quantum computer and then simulating quantum code using Azure and then running the quantum language code built in Visual Studio using a quantum compiler on their actual quantum computer. Why would Microsoft spend so much money on building something if they know it won't work. They are spending huge amount of money on resources at Santa Barbara, Redmond Washington and other sites around the world. Microsoft is using particles that people didn't know existed until 2012 to build their machine. Why would they decide, well it's 2017 and we hired the best talent in the world to give us an advantage, but you know what guys it's all fake and it won't work. Why would they announce this to the entire world, only to fall flat? Now you can be skeptical about the timeline of having a computer like 1000 qubits and all of that, but to say it won't work is a little bit of a lie because it's already working, but not yet at a scale that is game changing yet.
@Docwiz2
@Docwiz2 7 жыл бұрын
Jess Stuart Here is a lot more information on Microsoft's method of Topological Quantum Computing.... kzbin.info/www/bejne/eGG2o3-Dg7Z6mNE
@Docwiz2
@Docwiz2 5 жыл бұрын
@tgmforum tgmforum I don't know man, you go talk to them about it. They are all working on it. I know random can't really produce anything of significance. Life doesn't work that way. You might have random patterns in a snowflake, but it's only going to be according to the physics parameters that make up that snowflake. Quantum Computers are being worked on by many companies. It's not some conspiracy theory. Microsoft is working on getting their first qubit running on the topological algorithms. If Quantum theory didn't work with computers, then why would so many people be building them and why would they waste so much effort on this? You sound like one of those moon landing nuts that said it was fake.
@Docwiz2
@Docwiz2 5 жыл бұрын
@tgmforum tgmforum I guess we will just have to agree to disagree here. At any rate excited about pushing forward technology for all human kind.
@Docwiz2
@Docwiz2 5 жыл бұрын
@tgmforum tgmforum Well, there are a lot of issues here. For example, everyone is trying to do quantum computing in their own way using their own methods. Some are using lasers and and some are using particles that were not known about until recently. IBM already has a quantum computer up and running and already have their own qubits working, it's just that it's a small amount of qubits. Why would China, Microsoft, IBM, and Google be trying to work on this with different methods if this was all for nothing? They are all pouring billions of dollars into this, why would it just be fake? Why would none of this work? Sure, it's hard to do, but that isn't enough to say it's impossible. If it is impossible, we would just go back to A.I. on Super computers anyway.
@theFLCLguy
@theFLCLguy 3 жыл бұрын
It's just like fusion. Yes it's possible but it's never going to live up to the hype due to the limits of physics.
@annadasilvachen5235
@annadasilvachen5235 4 жыл бұрын
Why are people acting so negatively here, scepticism had always existed in science and that is fine. Even people like Newton or Einstein faced scepticism. It's just strange how some of you can be so opinionated about a subject which you don't understand thoroughly. Blindly following contrarian positions is the opposite of scepticism.
@annadasilvachen5235
@annadasilvachen5235 4 жыл бұрын
@Rayan Sharara What prove am I supposed to give? I'm not trying to defend either positions. Even if I wish to I'm not qualified enough to do so
@ivankontra3446
@ivankontra3446 3 жыл бұрын
The only blindness I see is countless people pretend to understand qc and propping up an investment purely by hype leading to nothing up to this point. I'm getting serious new age medicine vibes here.
@gregorioganesh4551
@gregorioganesh4551 10 жыл бұрын
The problem is that quantum computers would essentially be metaphysical computers, operating outside of time and space. But computers are physical objects that operate within the laws of time and space. A metaphysical computer would not be "logical" in the same sense that we think of logic in the physical world. Here lies what I see as an unbridgeable gap. The only way to bridge the gap would be for we humans to become metaphysical in consciousness! To expect a machine to do this for us is the height of lunacy and breaks one of the fundamental laws of metaphysics: ideas do NOT leave their source.....the source being our own minds (or consciousness).
@kensmith6572
@kensmith6572 6 жыл бұрын
Kind of funny how things work out. We went from, these are impossible. To, we can actually build these now. They suck, but we can build them now. Like normal computers, we are in the infancy and there's plenty to improve upon.
@BigSmartArmed
@BigSmartArmed 4 жыл бұрын
@rf4life That's the foundation scientism, it's a fraud. Quantum computing is not science, it's science. It's a cult.
@chris77777777ify
@chris77777777ify 3 жыл бұрын
A switch can only be on or off. Even if voltage can be changed it won’t change anything.
@debasishraychawdhuri
@debasishraychawdhuri 3 жыл бұрын
There is no doubt that quantum computers can be created since they have been created. The question is whether a quantum computer of arbitrary size can be created.
@aerosoapbreeze264
@aerosoapbreeze264 3 жыл бұрын
prove it. Show me a quantum computer that has 100% derived logic structure that doesn't attain a random number.
@GameOver81983
@GameOver81983 10 жыл бұрын
Hebrew University of Jerusalem...... religious people.....
@redpunk
@redpunk 8 жыл бұрын
No, just Hebrew speaking people from Jerusalem...
@ongeri
@ongeri 4 жыл бұрын
@@redpunk ooh, you mean those totally random scientific fellas from the officially exclusively jewish state?
@aerosoapbreeze264
@aerosoapbreeze264 3 жыл бұрын
its literately irrelevant if the science is sound. why not say something about the actual argument instead of pigeon holing, and no, im not religious at all and dislike Judaism for several reasons. But that's not what were talking about is it? ... No. the Science community, the Atheist community and the Skeptic community have all gone to shit.
@FaranAiki
@FaranAiki 3 жыл бұрын
A random name with a random photo profile... some troll on the internet.
@ONDANOTA
@ONDANOTA 3 жыл бұрын
2021 now. Quantum computers exist :::they work:::: and you can use one online
@FaranAiki
@FaranAiki 3 жыл бұрын
"You can use it online." Haha, I can use a normal-functioning computer that has a graphic on an abacus too!
@kenimprov
@kenimprov 3 жыл бұрын
Okay, but quantum computers have been built by Google and IBM already so I guess this proposition is empirically and demonstrably false?
@____-pn8yb
@____-pn8yb 3 жыл бұрын
They do no useful work.
@foxhound6364
@foxhound6364 3 жыл бұрын
They claim they've built quantum computers, but all they've "shown" them do is generate supposedly random numbers.
@theFLCLguy
@theFLCLguy 3 жыл бұрын
Is it the quantum computing doing the work or is it the algorithms taking quantum noise and matching it to what they want to find?
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