1208.5001 (P. R. Eastham et al.)

Lindblad theory of dynamical decoherence of quantum-dot excitons, with
applications to phonon spectroscopy and adiabatic rapid passage    [PDF]

P. R. Eastham, A. O. Spracklen, J. Keeling

We discuss the application of the Bloch-Redfield-Wangsness theory to the effects of acoustic phonons in coherent control experiments with quantum-dot excitons. This approach yields a positivity preserving Markovian density matrix equation that captures the same essential physics as the form recently applied to Rabi oscillation experiments [A. J. Ramsay et al. Phys. Rev. Lett. 104, 017402 (2010)]. At sufficiently low temperatures, it gives results equivalent to those of non-Markovian approaches [S. Luker et al. Phys. Rev. B 85, 121302 (2012)], but is significantly simpler to simulate. Using this approach we discuss a number of applications including optimization of adiabatic rapid passage and phonon spectroscopy.

View original: http://arxiv.org/abs/1208.5001