Deterministic photon entangler using a charged quantum dot inside a microcavity

C. Y. Hu, W. J. Munro, and J. G. Rarity
Phys. Rev. B 78, 125318 – Published 16 September 2008

Abstract

We present a deterministic and scalable scheme to generate photon polarization entanglement via a single electron spin confined in a charged quantum dot inside a microcavity. This scheme is based on giant circular birefringence and giant Faraday rotation induced by a single electron spin. Two independent photons are sequentially sent to the cavity and get entangled after measuring the spin state. We show that this scheme can be extended to generate multiphoton polarization entanglement including Greenberger-Horne-Zeilinger states and cluster states in a deterministic way.

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  • Received 15 August 2008

DOI:https://doi.org/10.1103/PhysRevB.78.125318

©2008 American Physical Society

Authors & Affiliations

C. Y. Hu1,*, W. J. Munro2,3, and J. G. Rarity1

  • 1Department of Electrical and Electronic Engineering, University of Bristol, University Walk, Bristol BS8 1TR, United Kingdom
  • 2Hewlett-Packard Laboratories, Filton Road, Stoke Gifford, Bristol BS34 8QZ, United Kingdom
  • 3National Institute of Informatics, 2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo 101-8430, Japan

  • *chengyong.hu@bristol.ac.uk

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Vol. 78, Iss. 12 — 15 September 2008

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