Optimal light storage in atomic vapor

Details Optimal light storage in atomic vapor Optimal light storage in atomic vapor

2008-05-21

arxiv.org/abs/0805.3348v1

Physics

Quantum Physics

10 pages, 9 figures

Scientific paper

10.1103/PhysRevA.78.023801

We study procedures for the optimization of efficiency of light storage and retrieval based on the dynamic form of electromagnetically induced transparency (EIT) in warm Rb vapor. We present a detailed analysis of two recently demonstrated optimization protocols: a time-reversal-based iteration procedure, which finds the optimal input signal pulse shape for any given control field, and a procedure based on the calculation of an optimal control field for any given signal pulse shape. We verify that the two procedures are consistent with each other, and that they both independently achieve the maximum memory efficiency for any given optical depth. We observe good agreement with theoretical predictions for moderate optical depths (<25), while at higher optical depths the experimental efficiency falls below the theoretically predicted values. We identify possible effects responsible for this reduction in memory efficiency.

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