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Reversible state transfer between light and a single trapped atom

A. D. Boozer·A. Boca·R. Miller·T. E. Northup·H. J. Kimble
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Abstract

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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A. D. Boozer, A. Boca, R. Miller, T. E. Northup, H. J. Kimble. 2007-02-27. Reversible state transfer between light and a single trapped atom. https://doi.org/10.1103/physrevlett.98.193601

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