Stochastic versus Periodic Quantum Collision Models

Most literature on quantum collision models (CMs) usually considers periodic weak collisions featuring a fixed waiting time between two next collisions. Some works have yet addressed CMs with random and strong (stochastic CMs). This short paper discusses how the open dynamics arising from these types of can be formally mapped one another. achieved for given stochastic CM by constructing an associated such that randomness former is turned into mixedness ancilla’s initial state latter, introducing at same additional ancilla. Through this mapping, non-Markovian behaviour constrained number stochatic linked to ancilla–ancilla correlations CM.