Generation of a superposition of multiple mesoscopic states of radiation in a resonant cavity

Details Generation of a superposition of multiple mesoscopic states of radiation in a resonant cavity Generation of a superposition of multiple mesoscopic states of radiation in a resonant cavity

2004-12-07

arxiv.org/abs/quant-ph/0412057v1

Phys. Rev. A 71, 043823 (2005)

Physics

Quantum Physics

submitted to Phys. Rev. A

Scientific paper

10.1103/PhysRevA.71.043823

Using resonant interaction between atoms and the field in a high quality cavity, we show how to generate a superposition of many mesoscopic states of the field. We study the quasi-probability distributions and demonstrate the nonclassicality of the superposition in terms of the zeroes of the Q-function as well as the negativity of the Wigner function. We discuss the decoherence of the generated superposition state. We propose homodyne techniques of the type developed by Auffeves et al [Phys. Rev. Lett. 91, 230405 (2003)] to monitor the superposition of many mesoscopic states.

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