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Experimental Demonstration of Single Photon Nonlocality

Björn Hessmo, Pavel Usachev, Hoshang Heydari, and Gunnar Björk
Phys. Rev. Lett. 92, 180401 – Published 4 May 2004
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Abstract

In this Letter we experimentally implement a single photon Bell test based on the ideas of S. Tan et al. [Phys. Rev. Lett. 66, 252 (1991)] and L. Hardy [Phys. Rev. Lett. 73, 2279 (1994)]. A double homodyne measurement is used to measure correlations in the Fock space spanned by zero and one photons. Local oscillators used in the correlation measurement are distributed to two observers by copropagating it in an orthogonal polarization mode. This method eliminates the need for interferometrical stability in the setup, consequently making it a robust and scalable method.

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  • Received 26 November 2003

DOI:https://doi.org/10.1103/PhysRevLett.92.180401

©2004 American Physical Society

Authors & Affiliations

Björn Hessmo1,*, Pavel Usachev2, Hoshang Heydari1, and Gunnar Björk1

  • 1Department of Microelectronics and Information Technology, Royal Institute of Technology (KTH), S-16440 Kista, Sweden
  • 2Ioffe Physico-technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia

  • *Electronic address: hessmo@imit.kth.se

See Also

Don’t Let Them Know You’re Watching

Don Monroe
Phys. Rev. Focus 13, 21 (2004)

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Vol. 92, Iss. 18 — 7 May 2004

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