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Long-range spin-qubit interaction mediated by microcavity polaritons

G. F. Quinteiro Rosen·J. Fernandez-Rossier·C. Piermarocchi
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Abstract

We study the optically-induced coupling between spins mediated by polaritons in a planar micro-cavity. In the strong coupling regime, the vacuum Rabi splitting introduces anisotropies in the spin coupling. Moreover, due to their photon-like mass, polaritons provide an extremely long spin coupling range. This suggests the realization of two-qubit all-optical quantum operations within tens of picoseconds with spins localized as far as hundreds of nanometers apart.

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G. F. Quinteiro Rosen, J. Fernandez-Rossier, C. Piermarocchi. 2006-03-18. Long-range spin-qubit interaction mediated by microcavity polaritons. https://doi.org/10.1103/physrevlett.97.097401

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