Efficient light storage in a crystal using an Atomic Frequency Comb

Details Efficient light storage in a crystal using an Atomic Frequency Comb Efficient light storage in a crystal using an Atomic Frequency Comb

2009-02-12

arxiv.org/abs/0902.2048v2

New J. Phys. 12, 023025 (2010)

Physics

Quantum Physics

Scientific paper

10.1088/1367-2630/12/2/023025

We demonstrate efficient and reversible mapping of a light field onto a thulium-doped crystal using an atomic frequency comb (AFC). Thanks to an accurate spectral preparation of the sample, we reach an efficiency of 9%. Our interpretation of the data is based on an original spectral analysis of the AFC. By independently measuring the absorption spectrum, we show that the efficiency is both limited by the available optical thickness and the preparation procedure at large absorption depth for a given bandwidth. The experiment is repeated with less than one photon per pulse and single photon counting detectors. We clearly observe that the AFC protocol is compatible with the noise level required for weak quantum field storage.

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