Test of quantum nonlocality for cavity fields

Details Test of quantum nonlocality for cavity fields Test of quantum nonlocality for cavity fields

2000-02-25

arxiv.org/abs/quant-ph/0002074v1

Physics

Quantum Physics

14pages, 2figures. accepted to Phys. Rev. A

Scientific paper

10.1103/PhysRevA.61.042102

There have been studies on formation of quantum-nonlocal states in spatially separate two cavities. We suggest a nonlocal test for the field prepared in the two cavities. We couple classical driving fields with the cavities where a nonlocal state is prepared. Two independent two-level atoms are then sent through respective cavities to interact off-resonantly with the cavity fields. The atomic states are measured after the interaction. Bell's inequality can be tested by the joint probabilities of two-level atoms being in their excited or ground states. We find that quantum nonlocality can also be tested using a single atom sequentially interacting with the two cavities. Potential experimental errors are also considered. We show that with the present experimental condition of 5% error in the atomic velocity distribution, the violation of Bell's inequality can be measured.

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