Coherent control of an atomic collision in a cavity

Details Coherent control of an atomic collision in a cavity Coherent control of an atomic collision in a cavity

2001-05-14

arxiv.org/abs/quant-ph/0105063v1

Physics

Quantum Physics

11 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.87.037902

Following a recent proposal by S. B. Zheng and G. C. Guo (Phys. Rev. Lett. 85, 2392 (2000)), we report an experiment in which two Rydberg atoms crossing a non-resonant cavity are entangled by coherent energy exchange. The process, mediated by the virtual emission and absorption of a microwave photon, is characterized by a collision mixing angle four orders of magnitude larger than for atoms colliding in free space with the same impact parameter. The final entangled state is controlled by adjusting the atom-cavity detuning. This procedure, essentially insensitive to thermal fields and to photon decay, opens promising perspectives for complex entanglement manipulations.

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