Quantcast

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

Research paper by Zhien Z Lu, Ka-Di KD Zhu, Jin-Jin JJ Li, Yi-Wen YW Jiang

Indexed on: 19 Nov '08Published on: 19 Nov '08Published in: Journal of physics. Condensed matter : an Institute of Physics journal



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.