Shaping quantum pulses of light via coherent atomic memory

Details Shaping quantum pulses of light via coherent atomic memory Shaping quantum pulses of light via coherent atomic memory

2004-06-14

arxiv.org/abs/quant-ph/0406093v1

Phys. Rev. Lett. 93, 233602 (2004).

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.93.233602

We describe a technique for generating pulses of light with controllable photon numbers, propagation direction, timing, and pulse shapes. The technique is based on preparation of an atomic ensemble in a state with a desired number of atomic spin excitations, which is later converted into a photon pulse. Spatio-temporal control over the pulses is obtained by exploiting long-lived coherent memory for photon states and electromagnetically induced transparency (EIT) in an optically dense atomic medium. Using photon counting experiments we observe generation and shaping of few-photon sub-Poissonian light pulses. We discuss prospects for controlled generation of high-purity n-photon Fock states using this technique.

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