Space-like Separation in a Bell Test assuming Gravitationally Induced Collapses

Details Space-like Separation in a Bell Test assuming Gravitationally Induced Collapses Space-like Separation in a Bell Test assuming Gravitationally Induced Collapses

2008-03-17

arxiv.org/abs/0803.2425v1

PRL 100, 220404 (2008)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevLett.100.220404

We report on a Bell experiment with space-like separation assuming that the measurement time is related to gravity-induced state reduction. Two energy-time entangled photons are sent through optical fibers and directed into unbalanced interferometers at two receiving stations separated by 18 km. At each station, the detection of a photon triggers the displacement of a macroscopic mass. The timing ensures space-like separation from the moment a photon enters its interferometer until the mass has moved. 2-photon interference fringes with a visibility of up to 90.5% are obtained, leading to a violation of Bell inequality.

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