Proposal for a loophole-free Bell test using homodyne detection

Details Proposal for a loophole-free Bell test using homodyne detection Proposal for a loophole-free Bell test using homodyne detection

2004-03-26

arxiv.org/abs/quant-ph/0403191v1

Phys. Rev. Lett. 93, 130409 (2004).

Physics

Quantum Physics

4 pages RevTex, 2 figures

Scientific paper

10.1103/PhysRevLett.93.130409

We propose a feasible optical setup allowing for a loophole-free Bell test with efficient homodyne detection. A non-gaussian entangled state is generated from a two-mode squeezed vacuum by subtracting a single photon from each mode, using beamsplitters and standard low-efficiency single-photon detectors. A Bell violation exceeding 1% is achievable with 6-dB squeezed light and an homodyne efficiency around 95%. A detailed feasibility analysis, based upon the recent generation of single-mode non-gaussian states, confirms that this method opens a promising avenue towards a complete experimental Bell test.

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