Detection of atomic entanglement and electromagnetically induced transparency in velocity-selective coherent population trapping

Details Detection of atomic entanglement and electromagnetically induced transparency in velocity-selective coherent population trapping Detection of atomic entanglement and electromagnetically induced transparency in velocity-selective coherent population trapping

2005-01-18

arxiv.org/abs/quant-ph/0501092v1

Phys. Rev. A 71, 033811 (2005)

Physics

Quantum Physics

Revtex, 9 pages, 6 figures. To appear in Physical Review A

Scientific paper

10.1103/PhysRevA.71.033811

We investigate theoretically the optical properties of an atomic gas which has been cooled by the laser cooling method velocity-selective coherent population trapping. We demonstrate that the application of a weak laser pulse gives rise to a backscattered pulse, which is a direct signal for the entanglement in the atomic system, and which leads to single-particle entanglement on the few-photon level. If the pulse is applied together with the pump lasers, it also displays the phenomenon of electromagnetically induced transparency. We suggest that the effect should be observable in a gas of Rubidium atoms.

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