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

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.

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

References in corpus (4)

• Storage of light in atomic vapor
• Dark-State Polaritons in Electromagnetically Induced Transparency
• Entanglement of Atomic Ensembles by Trapping Correlated Photon States
• Decoherence of Atomic Gases in Largely Detuned Laser Fields

Cited by in corpus (4)

• Three-Way Entanglement and Three-Qubit Phase Gate Based on a Coherent Six-Level Atomic System
• Two-way interconversion of millimeter-wave and optical fields in Rydberg gases
• Controllable Entanglement of Lights in a Five-Level System
• Pulse-splitting in light propagation through $N$-type atomic media due to an interplay of Kerr-nonlinearity and group velocity dispersion