Efficiency of feedback process in cavity quantum electrodynamics

Details Efficiency of feedback process in cavity quantum electrodynamics Efficiency of feedback process in cavity quantum electrodynamics

2007-08-02

arxiv.org/abs/0708.0274v1

Physics

Quantum Physics

11 pages, 5 figures, accepted for publication in Journal of Physics B

Scientific paper

10.1088/0953-4075/40/17/002

Utilizing the continuous frequency mode quantization scheme, we study from first principle the efficiency of a feedback scheme that can generate maximally entangled states of two atoms in an optical cavity through their interactions with a single input photon. The spectral function of the photon emitted from the cavity, which will be used as the input of the next round in the feedback process, is obtained analytically. We find that the spectral function of the photon is modified in each round and deviates from the original one. The efficiency of the feedback scheme consequently deteriorates gradually after several rounds of operation.

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