Long-range spin-qubit interaction mediated by microcavity polaritons

Details Long-range spin-qubit interaction mediated by microcavity polaritons Long-range spin-qubit interaction mediated by microcavity polaritons

2006-03-18

arxiv.org/abs/cond-mat/0603472v1

PRL 97, 097401 (2006)

Physics

Condensed Matter

Other Condensed Matter

5 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.97.097401

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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