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arXiv:1801.00862quant-ph

Quantum Computing in the NISQ era and beyond

John Preskill

Abstract

Noisy Intermediate-Scale Quantum (NISQ) technology will be available in the near future. Quantum computers with 50-100 qubits may be able to perform tasks which surpass the capabilities of today's classical digital computers, but noise in quantum gates will limit the size of quantum circuits that can be executed reliably. NISQ devices will be useful tools for exploring many-body quantum physics, and may have other useful applications, but the 100-qubit quantum computer will not change the world right away --- we should regard it as a significant step toward the more powerful quantum technologies of the future. Quantum technologists should continue to strive for more accurate quantum gates and, eventually, fully fault-tolerant quantum computing.

arXiv comments
20 pages. Based on a Keynote Address at Quantum Computing for Business, 5 December 2017. (v3) Formatted for publication in Quantum, minor revisions
Journal reference
Quantum 2, 79 (2018)
DOI
doi:10.22331/q-2018-08-06-79
Subjects
quant-phQuantum Physics cond-mat.str-elStrongly Correlated Electrons

On Hacker News

Linked by 6 identifiable commenters in 7 comments across 7 threads, from Jan 2018 to Dec 2020. Found in 7 HN submissions from Jan 2018 to Aug 2018. Open submission discussions.

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Discussed in comments7 threads

  1. First release of quantum operating system, Deltaflow 1 comment

    • We're probably decades away from Shor's algorithm. Right now we're mostly dealing in the realm of "Noisy Intermediate-Scale Quantum" machines (NISQ). The abstract of this paper gives a good summary of where we're at: https://arxiv.org/abs/1801.00862 The "operating system" has…

      packetlostView on HNParent context

  2. Scott’s Supreme Quantum Supremacy FAQ 1 comment

    • There is no known useful application of current quantum computing (so-called NISQ, for Noisy Intermediate-Scale Quantum). It is an open question whether there is any, see https://arxiv.org/abs/1801.00862.

      sanxiynView on HNParent context

  3. How to factor 2048 bit RSA integers in 8 hours using 20M noisy qubits 1 comment

    • Hopefully we will see results way before we start breaking RSA. It looks like people are targeting applications in quantum chemistry [1]. Also, Dyakonov's criticisms are toothless, see comments here [2]. [1] https://arxiv.org/abs/1801.00862 [2]…

      mathgeniusView on HNParent context

  4. US takes first step toward a quantum computing workforce 1 comment

    • For the skeptical, there are two quantum computing job tracks which can operate independently for the next while: (1) The engineering and basic physics research necessary to build a real, working quantum computer of high enough quality (low error rate) and size (number of qbits)…

      ahelwerView on HNParent context

  5. Quantum computing is almost ready for business, startup says 1 comment

    • I'm a little worried about these companies over-hyping the current state of capability. For sure, this is an exciting time though, and I am certainly optimistic about the long-term prospects. Anyone interested would do well to read [0] [0] https://arxiv.org/abs/1801.00862

      codekillaView on HNParent context

  6. Getting Started with Quantum Computing in Python 1 comment

    • Yes, there are two reasons that python is an ideal tool for quantum computing libraries at the moment. - In the NISQ era [1], circuits have limited depth and size. It doesn't matter so much which language (or even algorithm!) you use when N<1000. - Simulating a circuit is…

      StrilancView on HNParent context

  7. The Era of Quantum Computing Is Here. Outlook: Cloudy 1 comment

    • For a great perspective read this: https://arxiv.org/abs/1801.00862 This is a write up of his keynote talk at Q2b this year.

      codekillaView on HNParent context

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