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

Research output: Contribution to journalArticlepeer-review

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 languageEnglish
Article number130409
Number of pages4
JournalPhysical Review Letters
Volume93
Issue number13
DOIs
Publication statusPublished - 23 Sep 2004

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