Quantum and Semiclassical Optics Journal of the European Optical Society Part B

Stochastic wavefunction methods beyond the Born - Markov and rotating-wave approximations

P Stenius, Ataç İmamoğlu

Published Feb 1, 1996• 30 citations

Abstract

We develop a stochastic wavefunction approach to analyse non-Markovian system - reservoir interactions. Provided that the reservoir density operator is Gaussian, this approach can be used to treat strong reservoir coupling beyond the Born and rotating-wave approximations. The memory effects associated with the finite reservoir correlation time are incorporated into the dynamics by expanding the initial system using fictitious harmonic oscillator modes, so that the new enlarged system has Markovian dissipative interactions. We apply the new approach to the analysis of exciton - phonon interaction in a quasi-zero-dimensional GaAs structure and predict a strong deviation from the Born - Markov result.

DOI: 10.1088/1355-5111/8/1/021

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