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APS » Journals » Phys. Rev. A » Volume 57 » Issue 4
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Phys. Rev. A 57, R2267–R2269 (1998)

Optimizing the photon pair collection efficiency: A step toward a loophole-free Bell’s inequalities experiment

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C. H. Monken*, P. H. Souto Ribeiro, and S. Pádua
Departamento de Física, Universidade Federal de Minas Gerais, Caixa Postal 702, Belo Horizonte, MG 30123-970, Brazil

Received 1 December 1997; published in the issue dated April 1998

We show that the photon pair collection efficiency in coincidence measurements can be maximized when the two-photon state is generated in the process of spontaneous parametric down-conversion in a thin crystal. This effect can be used to close part of the so-called detection loophole in Bell's inequalities experiments. The effect is also demonstrated experimentally.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.57.R2267
DOI:
10.1103/PhysRevA.57.R2267
PACS:
03.65.Bz, 42.50.Ar

*Corresponding author. Electronic address: monken@fisica.ufmg.br

 
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