Stationary photon-atom entanglement and flow equation

Details Stationary photon-atom entanglement and flow equation Stationary photon-atom entanglement and flow equation

2007-08-10

arxiv.org/abs/0708.1361v1

Physics

Quantum Physics

21 pages, no figures

Scientific paper

10.1016/j.physa.2007.10.005

Stationary photon-atom entanglement is discussed by applying the method of flow equation to the Jaynes-Cummings model. A nonlocal continuous unitary transformation is explicitly constructed and the associated positive operator-valued measures for the photons and atom are obtained. Then, flow of the entanglement entropy is analyzed. A comment is also made on implementing the unitary operation in the method of flow equation. This method may offer a new strategy for quantum-state engineering.

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