Loophole-free Bell test for one atom and less than one photon

Details Loophole-free Bell test for one atom and less than one photon Loophole-free Bell test for one atom and less than one photon

2011-08-04

arxiv.org/abs/1108.1027v1

Phys. Rev. A 84, 052122 (2011)

Physics

Quantum Physics

6 pages, 2 figures

Scientific paper

We consider the entanglement between two internal states of a single atom and two photon number states describing either the vaccum or a single photon and thus containing, on average, less than one photon. We show that this intriguing entanglement can be characterized through substantial violations of a Bell inequality by performing homodyne detections on the optical mode. We present the experimental challenges that need to be overcome to pave the way towards a loophole-free Bell test in this setup.

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