Wednesday, February 15, 2012

1202.3049 (Jonatan Bohr Brask et al.)

Robust multipartite Bell tests with a single photon    [PDF]

Jonatan Bohr Brask, Rafael Chaves
Lately, much interest has been directed towards designing setups that achieve
decisive tests of local realism. Here we present a Bell test based on the state
of a single nonlocalised photon. The scheme is easily extendible to any number
of observers, allowing observation of multipartite nonlocality, and has a good
tolerance to loss, compatible with current efficiencies of detectors and
single-photon sources. The required entangled state and measurements can be
realized via linear optics and single-photon detection, facilitating
experimental implementation of the scheme. We also consider the case of
atom-photon entanglement, where the loss threshold can be lowered further, as
well as local filters compensating transmission and coupling inefficiencies at
the source.
View original: http://arxiv.org/abs/1202.3049

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