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arXiv · 1605.05132

Single-atom single-photon coupling facilitated by atomic-ensemble dark-state mechanisms

Andrew C. J. Wade·Marco Mattioli·Klaus Molmer
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Abstract

We propose to couple single atomic qubits to photons incident on a cavity containing an atomic ensemble of a different species that mediates the coupling via Rydberg interactions. Subject to a classical field and the cavity field, the ensemble forms a collective dark state which is resonant with the input photon, while excitation of a qubit atom leads to a secondary "dark" state that splits the cavity resonance. The two different dark state mechanisms yield zero and $π$ reflection phase shifts and can be used to implement quantum gates between atomic and optical qubits.

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Andrew C. J. Wade, Marco Mattioli, Klaus Molmer. 2016-11-17. Single-atom single-photon coupling facilitated by atomic-ensemble dark-state mechanisms. https://doi.org/10.1103/physreva.94.053830

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