Time-Convolutionless Stochastic Unraveling of Non-Markovian Quantum Master Equations

Employing the time-convolutionless projection operator technique a stochastic wave function dynamics is derived which describes the time evolution of an open quantum system beyond the Born-Markov approximation. The method yields a systematic perturbation expansion in the coupling strength between system and environment. The performance of the method is tested with the help of the damped Jaynes-Cummings model and shown to be more efficient than other approaches based on the generalized master equation.