Reversible state transfer between light and a single trapped atom

Details Reversible state transfer between light and a single trapped atom Reversible state transfer between light and a single trapped atom

2007-02-27

arxiv.org/abs/quant-ph/0702248v1

Physics

Quantum Physics

5 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.98.193601

We demonstrate the reversible mapping of a coherent state of light with mean photon number n-bar ~= 1.1 to and from the hyperfine states of an atom trapped within the mode of a high finesse optical cavity. The coherence of the basic processes is verified by mapping the atomic state back onto a field state in a way that depends on the phase of the original coherent state. Our experiment represents an important step towards the realization of cavity QED-based quantum networks, wherein coherent transfer of quantum states enables the distribution of quantum information across the network.

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