Coherent generation of EPR-entangled light pulses mediated by a single trapped atom

Details Coherent generation of EPR-entangled light pulses mediated by a single trapped atom Coherent generation of EPR-entangled light pulses mediated by a single trapped atom

2005-12-23

arxiv.org/abs/quant-ph/0512221v1

Phys. Rev. A 73, 033822 (2006)

Physics

Quantum Physics

11 pages, 4 figures

Scientific paper

10.1103/PhysRevA.73.033822

We show that a single, trapped, laser-driven atom in a high-finesse optical cavity allows for the quantum-coherent generation of entangled light pulses on demand. Schemes for generating simultaneous and temporally separated pulse pairs are proposed. The mechanical effect of the laser excitation on the quantum motion of the cold trapped atom mediates the entangling interaction between two cavity modes and between the two subsequent pulses, respectively. The entanglement is of EPR-type, and its degree can be controlled through external parameters. At the end of the generation process the atom is decorrelated from the light field. Possible experimental implementations of the proposals are discussed.

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