Quantum Bayesian Networks

July 11, 2017

Quantum Meetup Supremacy

Filed under: Uncategorized — rrtucci @ 6:54 pm

Google, under the direction of Neven and Martinis, has promised a quantum computing device with 49= 7×7 physical superconductive qubits by the end of this year and to use this device to achieve Quantum Supremacy (what I like to call achieving quantum escape velocity). By this they mean that they will report on an experiment that uses their 49 qubit device to calculate in less than a second, an output that would take conventional classical computers years to calculate. I’ve even heard that Neven has a banner somewhere in the Google-plex rallying his storm-troopers to achieve Quantum Supremacy before anyone else. When Martinis first joined Google circa Sept. 2014, he told the media that Neven had convinced him to build a quantum annealer à la DWave but with error correction. But this 49 qubit device appears to be purely a gate model superconductive device similar to the current 16 qubit IBM device and 8 qubit Rigetti device. Since 49 is much larger than 16 or 8, this threatens to cause a massive migration of users from the IBM and Rigetti projects to the Google one.

Okay, Google, it’s likely that you will soon achieve Quantum Supremacy, and even Quantum Popularity Supremacy, but at least for now, the Toronto Quantum Computing Meetup has a firm hold on Quantum Meetup Supremacy, and there is nothing you can do about it. Indeed, according to this page, our club has more members than any other dedicated quantum computing meetup club in the world (current number of members: Toronto-634, Austin-597, San Francisco-583, etc.)



  1. Thanks. I had seen the news item. It was mentioned in Preskill’s Twitter feed. But as Lubos correctly points out, this Rusky-Harvud device does not execute a sequence of elementary gates from a universal set, so it isn’t a full fledged universal gate model quantum computer. Martinis’s 49 qubit device promised by year’s end will be a true qc. Funny how Lubos manages to connect this device to Trump-Putin gate. Both have the word gate in common, but nothing else.

    Comment by rrtucci — July 26, 2017 @ 1:33 pm

  2. Situation with comparison of universality it not quite clear for me: http://www.scottaaronson.com/blog/?p=3336#comment-1739877

    Comment by Alexander — July 26, 2017 @ 1:37 pm

  3. Yes, it is possible that this device might be capable of achieving universal computation. It’s beautiful work and I’m certain that Lukin can and will improve it. But Google is a formidable competitor. As soon as they come out with their 49 qubit device, the programmers and news media will not want to talk about anything else, just like what happened when tensorflow came out.

    Comment by rrtucci — July 26, 2017 @ 1:56 pm

  4. I see you’ve noted my last tweet. Thank you. Lukin’s Quantum Center here just a part of Fund mentioned in the minutes. BTW I tried to adapt tensorflow to my work , but still without success.

    Comment by Alexander — July 31, 2017 @ 3:20 pm

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