Deterministic generation of polarization-entangled photon pairs in a cavity-QED system

Details Deterministic generation of polarization-entangled photon pairs in a cavity-QED system Deterministic generation of polarization-entangled photon pairs in a cavity-QED system

2007-11-11

arxiv.org/abs/0711.1651v1

Physics Letters A 372 (2008) 5959-5963

Physics

Quantum Physics

15 pages, 4figures

Scientific paper

10.1016/j.physleta.2008.07.065

We propose a cavity-QED scheme that can deterministically generate Einstein-Podosky-Rosen polarization-entangled photon pairs. A four-level tripod atom successively couples to two high-Q optical cavities possessing polarization degeneracy, assisted by a classical $\pi$-polarized pump field. The stimulated Raman adiabatic passage process in the atom-cavity system is used to produce the polarization-entangled photon pairs. The proposal is particularly robust against atomic spontaneous decay, which should have potential applications in quantum information processing.

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