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J Phys Condens Matter. 2008 Nov 19;20(46):465207. doi: 10.1088/0953-8984/20/46/465207. Epub 2008 Oct 21.

Phonon-induced decoherence of spin-orbit-driven coherent oscillations in a single InGaAs quantum dot.

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  • 1Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.

Abstract

The effect of direct spin-phonon interactions on spin-orbit-driven coherent oscillations in a single quantum dot proposed by Debald and Emary (2005 Phys. Rev. Lett. 94 226803) is investigated theoretically in terms of the perturbation treatment based on a unitary transformation. It is shown that the decoherence rate induced by acoustic phonons strongly depends on the spin-orbit coupling strength, the magnetic field strength and the dot size.

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