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Reliable quantum computers

Preskill, John (1998) Reliable quantum computers. Proceedings of the Royal Society A: Mathematical, physical, and engineering sciences, 454 (1969). pp. 385-410. ISSN 1364-5021. https://resolver.caltech.edu/CaltechAUTHORS:20200929-143507282

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Abstract

The new field of quantum error correction has developed spectacularly since its origin less than two years ago. Encoded quantum information can be protected from errors that arise due to uncontrolled interactions with the environment. Recovery from errors can work effectively even if occasional mistakes occur during the recovery procedure. Furthermore, encoded quantum information can be processed without serious propagation of errors. Hence, an arbitrarily long quantum computation can be performed reliably, provided that the average probability of error per quantum gate is less than a certain critical value, the accuracy threshold. A quantum computer storing about 10⁶ qubits, with a probability of error per quantum gate of order 10⁻⁶, would be a formidable factoring engine. Even a smaller less–accurate quantum computer would be able to perform many useful tasks. This paper is based on a talk presented at the ITP Conference on Quantum Coherence and Decoherence, 15 to 18 December 1996.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1098/rspa.1998.0167DOIArticle
https://arxiv.org/abs/quant-ph/9705031arXivDiscussion Paper
ORCID:
AuthorORCID
Preskill, John0000-0002-2421-4762
Additional Information:© 1998 The Royal Society. This work has been supported in part by the Department of Energy under Grant No. DE-FG03-92-ER40701, and by DARPA under Grant No. DAAH04-96-1-0386 administered by the Army Research Office. I am grateful to David DiVincenzo and Wojciech Zurek for organizing this stimulating meeting, and I thank Andrew Steane and Christof Zalka for helpful comments on the manuscript. I also thank my collaborators David Beckman, Jarah Evslin, Sham Kakade, and especially Daniel Gottesman for many productive discussions about fault-tolerant quantum computation.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG03-92-ER40701
Army Research Office (ARO)DAAH04-96-1-0386
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Subject Keywords:fault-tolerant computation; quantum leaks; reliable quantum computers
Issue or Number:1969
Record Number:CaltechAUTHORS:20200929-143507282
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200929-143507282
Official Citation:Preskill John 1998 Reliable quantum computers Proc. R. Soc. Lond. A. 454:385–410 http://doi.org/10.1098/rspa.1998.0167
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:105650
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:30 Sep 2020 15:34
Last Modified:30 Sep 2020 15:34

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