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arxiv: 0908.1161 · v1 · submitted 2009-08-09 · ❄️ cond-mat.mes-hall

Microcavity-mediated Coupling of Two Distant Semiconductor Qubits

E. Gallardo , L.J. Martinez , A.K. Nowak , H.P. van der Meulen , J.M. Calleja , C. Tejedor , I. Prieto , D. Granados
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A.G. Taboada J.M. Garcia P.A. Postigo
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classification ❄️ cond-mat.mes-hall
keywords quantumdotscouplingdistantexcitationqubitsresultscavity
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Long distance (1.4 micron) interaction of two different InAs/GaAs quantum dots in a photonic crystal microcavity is observed. Resonant optical excitation in the p-state of any of the quantum dots, results in an increase of the s-state emission of both quantum dots and the cavity mode. The cavity-mediated coupling can be controlled by varying the excitation intensity. These results represent an experimental step towards the realization of quantum logic operations using distant solid state qubits.

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