Solid-State Spin-Photon Quantum Interface without Spin-Orbit Coupling

Details Solid-State Spin-Photon Quantum Interface without Spin-Orbit Coupling Solid-State Spin-Photon Quantum Interface without Spin-Orbit Coupling

2009-12-17

arxiv.org/abs/0912.3378v1

Phys. Rev. Lett. 104, 177403 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.104.177403

We show that coherent optical manipulation of a single confined spin is possible even in the absence of spin-orbit coupling. To this end, we consider the non-Markovian dynamics of a single valence orbital hole spin that has optically induced spin exchange coupling to a low temperature partially polarized electron gas. We show that the fermionic nature of the reservoir induces a coherent component to the hole spin dynamics that does not generate entanglement with the reservoir modes. We analyze in detail the competition of this reservoir-assisted coherent contribution with dissipative components displaying markedly different behavior at different time scales and determine the fidelity of optically controlled spin rotations.

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