Coherent Time-Delayed Atom-Light Interferometer

Details Coherent Time-Delayed Atom-Light Interferometer Coherent Time-Delayed Atom-Light Interferometer

2011-07-04

arxiv.org/abs/1107.0507v1

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

We present experimental observations of interference between an atomic spin coherence and an optical field in a $\Lambda$-type gradient echo memory. The interference is mediated by a strong classical field that couples a weak probe field to the atomic spin coherence through a resonant Raman transition. Interference can be observed between a prepared spin coherence and another propagating optical field, or between multiple $\Lambda$ transitions driving a single spin coherence. In principle, the interference in each scheme can yield a near unity visibility and could be used as a coherent all-optical switch.

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