How Good Must Single Photon Sources and Detectors Be for Efficient Linear Optical Quantum Computation?

Michael Varnava, Daniel E. Browne, and Terry Rudolph
Phys. Rev. Lett. 100, 060502 – Published 12 February 2008
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Abstract

We present a scheme for linear optical quantum computation that is highly robust to imperfect single photon sources and inefficient detectors. In particular we show that if the product of the detector efficiency with the source efficiency is greater than 2/3, then efficient linear optical quantum computation is possible. This high threshold is achieved within the cluster state paradigm for quantum computation.

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  • Received 6 February 2007

DOI:https://doi.org/10.1103/PhysRevLett.100.060502

©2008 American Physical Society

Authors & Affiliations

Michael Varnava1, Daniel E. Browne2,3, and Terry Rudolph1,4

  • 1QOLS, Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BW, United Kingdom
  • 2Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT
  • 3Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, United Kingdom
  • 4Institute for Mathematical Sciences, Imperial College London, 53 Exhibition Road, London SW7 2BW, United Kingdom

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Issue

Vol. 100, Iss. 6 — 15 February 2008

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