Quantum dreams

The war between wetware and hardware.
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Witness
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Quantum dreams

Post by Witness » Thu Jun 27, 2019 4:02 am

Google's Quantum Processor May Achieve Quantum Supremacy in Months

Moore's Law famously held that computer processor power would double about every two years, but now, Neven's Law appears to show quantum computing's explosive, 'doubly exponential' growth.

While I said several months ago that we'd find a way to bring Moore's Law back, I didn't expect it to go down like this. In a new report in Quanta Magazine by Kevin Hartnett, Hartmut Neven, the director of Google's Quantum Artificial Intelligence Lab, reveals that the growth in power with each new improvement to Google's best quantum processor is unlike anything found in nature. It's growing at not just an exponential rate, like in Moore's Law, but at a doubly-exponential rate, meaning we may be mere months away from the beginning of the practical quantum computing era.

[…]

Google's top-performing quantum processor was doing something that has no obvious parallels in nature. "Doubly exponential growth," Hartnett writes, "is so singular that it’s hard to find examples of it in the real world. The rate of progress in quantum computing may be the first."

The unparalleled acceleration of quantum computing speeds Neven first identified started being called Neven's Law by Google researchers in a not-so-subtle reference to classical computing's Moore's Law, but with a difference. They are of a kind, but what is happening over at Google is not simply the return of Moore's Law for the quantum era; Neven's law is showing us that we may be about to plunge into an entirely alien world in only a few months.
https://interestingengineering.com/goog ... -in-months

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Rob Lister
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Re: Quantum dreams

Post by Rob Lister » Thu Jun 27, 2019 9:34 am

Witness wrote:
Thu Jun 27, 2019 4:02 am
Google's Quantum Processor May Achieve Quantum Supremacy in Months

breathlessness
I'll be more excited when it is put to actual use.

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shemp
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Re: Quantum dreams

Post by shemp » Thu Jun 27, 2019 2:14 pm

One day mankind will wish they had never done this.
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Anaxagoras
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Re: Quantum dreams

Post by Anaxagoras » Thu Jun 27, 2019 3:07 pm

Or perhaps it will be all over before we even have time to regret it.
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Abdul Alhazred
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Re: Quantum dreams

Post by Abdul Alhazred » Thu Jun 27, 2019 4:03 pm

Does this increased processing power make the existing amount of processing any cheaper?
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Re: Quantum dreams

Post by Anaxagoras » Thu Oct 24, 2019 7:20 am

A fool thinks himself to be wise, but a wise man knows himself to be a fool.
William Shakespeare

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Abdul Alhazred
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Re: Quantum dreams

Post by Abdul Alhazred » Thu Oct 24, 2019 11:42 am

Quantum supremacy?

More like quantum privilege! :evil:
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Re: Quantum dreams

Post by Anaxagoras » Thu Oct 24, 2019 11:55 am

The quantum master race!!! :o
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Re: Quantum dreams

Post by Anaxagoras » Sun Oct 27, 2019 4:05 am

IBM casts doubt on Google’s claims of quantum supremacy

https://www.scottaaronson.com/blog/?p=4372
OK, so let’s carefully spell out what the IBM paper says. They argue that, by commandeering the full attention of Summit at Oak Ridge National Lab, the most powerful supercomputer that currently exists on Earth—one that fills the area of two basketball courts, and that (crucially) has 250 petabytes of hard disk space—one could just barely store the entire quantum state vector of Google’s 53-qubit Sycamore chip in hard disk. And once one had done that, one could simulate the chip in ~2.5 days, more-or-less just by updating the entire state vector by brute force, rather than the 10,000 years that Google had estimated on the basis of my and Lijie Chen’s “Schrödinger-Feynman algorithm” (which can get by with less memory).

The IBM group understandably hasn’t actually done this yet—even though IBM set it up, the world’s #1 supercomputer isn’t just sitting around waiting for jobs! But I see little reason to doubt that their analysis is basically right. I don’t know why the Google team didn’t consider how such near-astronomical hard disk space would change their calculations; probably they wish they had.
IBM's contention seems to be that if you change the problem a bit, they can get it down to 2.5 days on the world's largest supercomputer, with a ginormous hard drive given over entirely to the problem. That's still a factor of 1000 times slower, by the way.
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ed
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Re: Quantum dreams

Post by ed » Sun Oct 27, 2019 12:22 pm

What is the cost of these things?
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Abdul Alhazred
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Re: Quantum dreams

Post by Abdul Alhazred » Sun Oct 27, 2019 1:10 pm

If it's for real, Google will use it for evil.
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ed
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Re: Quantum dreams

Post by ed » Sun Oct 27, 2019 1:21 pm

Damn right.
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Re: Quantum dreams

Post by sparks » Sun Oct 27, 2019 3:01 pm

"The word is given. Warp speed."
You can lead them to knowledge, but you can't make them think.