Proposal for Pulsed On-Demand Sources of Photonic Cluster State Strings

Netanel H. Lindner and Terry Rudolph
Phys. Rev. Lett. 103, 113602 – Published 8 September 2009
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Abstract

We present a method to convert certain single photon sources into devices capable of emitting large strings of photonic cluster state in a controlled and pulsed “on-demand” manner. Such sources would greatly reduce the resources required to achieve linear optical quantum computation. Standard spin errors, such as dephasing, are shown to affect only 1 or 2 of the emitted photons at a time. This allows for the use of standard fault tolerance techniques, and shows that the photonic machine gun can be fired for arbitrarily long times. Using realistic parameters for current quantum dot sources, we conclude high entangled-photon emission rates are achievable, with Pauli-error rates per photon of less than 0.2%. For quantum dot sources, the method has the added advantage of alleviating the problematic issues of obtaining identical photons from independent, nonidentical quantum dots, and of exciton dephasing.

  • Figure
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  • Received 22 October 2008

DOI:https://doi.org/10.1103/PhysRevLett.103.113602

©2009 American Physical Society

Authors & Affiliations

Netanel H. Lindner1 and Terry Rudolph2,3

  • 1Department of Physics, Technion-Israel Institute of Technology, 32000 Haifa, Israel
  • 2Optics Section, Blackett Laboratory, Imperial College London, London SW7 2BZ, United Kingdom
  • 3Institute for Mathematical Sciences, Imperial College London, London SW7 2BW, United Kingdom

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Issue

Vol. 103, Iss. 11 — 11 September 2009

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