Quantum memory for light via stimulated off-resonant Raman process: beyond the three-level Lambda-scheme approximation

Details Quantum memory for light via stimulated off-resonant Raman process: beyond the three-level Lambda-scheme approximation Quantum memory for light via stimulated off-resonant Raman process: beyond the three-level Lambda-scheme approximation

2010-07-20

arxiv.org/abs/1007.3391v1

Phys. Rev. A 82, 033838 (2010)

Physics

Quantum Physics

8 pages, 6 figures

Scientific paper

10.1103/PhysRevA.82.033838

We consider a quantum memory scheme based on the conversion of a signal pulse into a long-lived spin coherence via stimulated off-resonant Raman process. For a storing medium consisting of alkali atoms, we have calculated the Autler-Townes resonance structure created by a strong control field. By taking into account the upper hyperfine states of the D1 optical transition, we show important deviations from the predictions of the usual three-level Lambda-scheme approximation and we demonstrate an enhancement of the process for particular detunings of the control. We estimate the memory efficiency one can obtain using this configuration.

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