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

M. Kiffner·K. -P. Marzlin
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Abstract

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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M. Kiffner, K. -P. Marzlin. 2005-01-18. Detection of atomic entanglement and electromagnetically induced transparency in velocity-selective coherent population trapping. https://doi.org/10.1103/physreva.71.033811

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