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Google Quantum AI

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111–120 of 210 posts

Re: Google Quantum AI

#111

Hilarious. Even the connection between AI and Quantum computing is deeply opaque. When computers first began development during WW2, they were a response to immediate demands for particular functionality from many technical areas. Quantum computing seems to go the exact opposite route, first of building up an (admittedly very interesting) technology and then later figuring out if there actually is anything useful to…

I think Quantum Blockchain AI is the future

Re: Google Quantum AI

#112

With things like these, I like to think how much money went into the development of the random PR assets like the weird progression diagram. Apparently, that money is better spent of these than say, someone on the Python Language Committee, or your entire Python team.

I don't think the random PR assets cost as much as you think they do. I know people that could knock that out in a day or so.

Knowing the industry there's a bunch of people out there on the payroll continuously knocking out these assets all day long every day.

Re: Google Quantum AI

#113
post #65

Earlier quoted context omitted.

> I have heard this mentioned several times in the last decade or so : "The only thing a quantum computer definitively does better than a classical computer is simulating a quantum computer." And, hopefully, other quantum systems in general! I can see that helping with material science. That can have huge multiplier effects on the rest of the economy. But I agree with you, that other serious applications of quantum c…

I thought one of the main advantages of QC was that it could (theoretically) solve existing problems that have exponential time complexity with more efficiency. Isn’t the idea that it could make everything faster? Or did I fall for the marketing.

> Isn’t the idea that it could make everything faster?

If that is your understanding, then yes, you have unfortunately fallen for the very mistaken reporting on this.

There are specific algorithms that Quantum Computing can solve faster than regular computers. Some of these algorithms are incredibly important, and a faster solution to them would cause serious changes to the world, namely Shor's algorithm, which would make factoring large numbers much faster. This would effectively break many/most encryption schemes in the world. So it's a big deal!

Nevertheless, this isn't true in general - not every algorithm is known to have such a speedup. (I'm not an expert, I'm not sure if we know that there isn't a general speedup, or think there might be but haven't found it.)

Re: Google Quantum AI

#114
post #15

The fact this prize exists is admitting that no one has figured out a use for quantum computers. I have heard this mentioned several times in the last decade or so : "The only thing a quantum computer definitively does better than a classical computer is simulating a quantum computer." Whether this capability is useful is up in the air. Note that in practice, classical computers are going to be better at factoring nu…

> no one has figured out a use for quantum computers.

It is my understanding that a use is very straightforward: quickly solving problems in the Big(O) Factorial Class (n!).

I could be misunderstanding QC though.

Re: Google Quantum AI

#115
post #15

The fact this prize exists is admitting that no one has figured out a use for quantum computers. I have heard this mentioned several times in the last decade or so : "The only thing a quantum computer definitively does better than a classical computer is simulating a quantum computer." Whether this capability is useful is up in the air. Note that in practice, classical computers are going to be better at factoring nu…

The origins of quantum computing give it a clear use: simulation of many-body systems.

Number factorization and anything else in BQP is also an use for them.

Re: Google Quantum AI

#117

Hilarious. Even the connection between AI and Quantum computing is deeply opaque. When computers first began development during WW2, they were a response to immediate demands for particular functionality from many technical areas. Quantum computing seems to go the exact opposite route, first of building up an (admittedly very interesting) technology and then later figuring out if there actually is anything useful to…

Quantum Machine Learning is a pretty solid connection: - https://youtu.be/Lbndu5EIWvI

Re: Google Quantum AI

#118
post #89

Earlier quoted context omitted.

The big one is simulation of quantum systems, I don’t get how that’s not enough by itself? Classical computers will never be able to simulate quantum systems efficiently so we need quantum computers for that. In general achieving arbitrary precision control of quantum states is something that will open avenues in many areas like sensing as well, so just from that angle alone a working quantum computer would open a ne…

What does it mean to “simulate” a quantum system and why is that useful

Simulate roughly means designing a quantum computer that mimicks the dynamics of a real quantum system and then run a simulation of that to learn how it would behave under certain conditions e.g. to optimize its parameters. Similar to how we simulate planes or complex circuits today. Quantum systems are everywhere e.g. lasers, cold atoms, transistors or other complex semiconductors, superconductors, enzymes, … I’d say if we don’t develop the ability to understand these systems through simulation we will never progress beyond a certain technological boundary, and quantum computers are a necessary technology for that, just like classical computers were instrumental for the past scientific revolution.

Re: Google Quantum AI

#119
post #48

Earlier quoted context omitted.

From Feynman's 1982 talk on quantum computing: "[N]ature isn't classical, dammit, and if you want to make a simulation of nature, you'd better make it quantum mechanical, and by golly it's a wonderful problem, because it doesn't look so easy." 0. https://s2.smu.edu/~mitch/class/5395/papers/feynman-quantum-...

You can simulate quantum mechanics with classical computers pretty well, as long as you stick to the copenhagen interpretation.

No even simulation of pure quantum states scales exponentially with the number of degrees of freedom, that’s irrespective of any interpretation or invoking of non-unitary evolution like measurements, just pure simulation of the Schrödinger equation. If you simulate an environment to e.g. incorporate wave function collapse or measurement operations you’ll work with a master equation that also grows linearly with the complexity of the density matrix simulation.

Re: Google Quantum AI

#120
post #112

Earlier quoted context omitted.

I don't think the random PR assets cost as much as you think they do. I know people that could knock that out in a day or so.

Knowing the industry there's a bunch of people out there on the payroll continuously knocking out these assets all day long every day.

Google routinely uses agencies for this kind of work (I have been on both sides). A marketing website like this would be a ~$100,000 spend (depends how many pages and how many creative assets).
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