Non-Markovian waiting time distribution
  Simulation methods based on stochastic realizations of state vector evolutions are commonly used tools to solve open quantum system dynamics, both in the Markovian and non-Markovian regime. Here, we address the question of waiting time distribution (WTD) of quantum jumps for non-Markovian systems. We generalize Markovian quantum trajectory methods in the sense of deriving an exact analytical WTD for non-Markovian quantum dynamics and show explicitly how to construct this distribution for certain commonly used quantum optical systems. 
Kimmo Luoma, Kari H\"ark\"onen, Sabrina Maniscalco, Kalle-Antti   Suominen, Jyrki Piilo
quant-ph