A Bell's Inequality Test with Entangled Atoms

Details A Bell's Inequality Test with Entangled Atoms A Bell's Inequality Test with Entangled Atoms

2000-06-12

arxiv.org/abs/quant-ph/0006054v3

Phys. Rev. A 62, 052102 (2000)

Physics

Quantum Physics

9 pages, 5 figures, Section III describing how to suppress spontaneous emission during the state preparation has been replaced

Scientific paper

10.1103/PhysRevA.62.052102

Previous work on Bell's inequality realised in the laboratory has used entangled photons. Here we describe how entangled atoms can violate Bell's inequality, and how these violations can be measured with a very high detection efficiency. We first discuss a simple scheme based on two-level atoms inside a cavity to prepare the entangled state. We then discuss a scheme using four-level atoms, which requires a parameter regime much easier to access experimentally using current technology. As opposed to other schemes, our proposal relies on the presence of finite decay rates and its implementation should therefore be much less demanding.

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