Proposal for a Loophole-Free Bell Test Using Homodyne Detection

Raul Garcia-Patron Sanchez; J.  Fiurášek; N. J. Cerf; J. Wenger; R. Tualle-Brouri; Ph. Grangier

doi:10.1103/PhysRevLett.93.130409

Proposal for a Loophole-Free Bell Test Using Homodyne Detection

Raul Garcia-Patron Sanchez, J. Fiurášek, N. J. Cerf, J. Wenger, R. Tualle-Brouri, Ph. Grangier

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Abstract

We propose a feasible optical setup allowing for a loophole-free Bell test with efficient homodynedetection. A non-Gaussian entangled state is generated from a two-mode squeezed vacuum bysubtracting a single photon from each mode, using beam splitters and standard low-efficiencysingle-photon detectors. A Bell violation exceeding 1% is achievable with 6 dB squeezed light and ahomodyne efficiency around 95%. A detailed feasibility analysis, based upon the recent experimentalgeneration of single-mode non-Gaussian states, suggests that this method opens a promising avenuetowards a complete experimental Bell test.

Original language	English
Article number	130409
Number of pages	4
Journal	Physical Review Letters
Volume	93
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.93.130409
Publication status	Published - 23 Sept 2004

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title = "Proposal for a Loophole-Free Bell Test Using Homodyne Detection",

abstract = "We propose a feasible optical setup allowing for a loophole-free Bell test with efficient homodynedetection. A non-Gaussian entangled state is generated from a two-mode squeezed vacuum bysubtracting a single photon from each mode, using beam splitters and standard low-efficiencysingle-photon detectors. A Bell violation exceeding 1% is achievable with 6 dB squeezed light and ahomodyne efficiency around 95%. A detailed feasibility analysis, based upon the recent experimentalgeneration of single-mode non-Gaussian states, suggests that this method opens a promising avenuetowards a complete experimental Bell test.",

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AU - Cerf, N. J.

AU - Wenger, J.

AU - Tualle-Brouri, R.

AU - Grangier, Ph.

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AB - We propose a feasible optical setup allowing for a loophole-free Bell test with efficient homodynedetection. A non-Gaussian entangled state is generated from a two-mode squeezed vacuum bysubtracting a single photon from each mode, using beam splitters and standard low-efficiencysingle-photon detectors. A Bell violation exceeding 1% is achievable with 6 dB squeezed light and ahomodyne efficiency around 95%. A detailed feasibility analysis, based upon the recent experimentalgeneration of single-mode non-Gaussian states, suggests that this method opens a promising avenuetowards a complete experimental Bell test.

U2 - 10.1103/PhysRevLett.93.130409

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JO - Physical Review Letters

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Proposal for a Loophole-Free Bell Test Using Homodyne Detection

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