Heisenberg picture operators in the stochastic wave function approach to open quantum systems

Details Heisenberg picture operators in the stochastic wave function approach to open quantum systems Heisenberg picture operators in the stochastic wave function approach to open quantum systems

1998-07-28

arxiv.org/abs/quant-ph/9807080v1

Eur.Phys.J. D1 (1998) 9-13

Physics

Quantum Physics

RevTex, 5 pages, 2 figures, uses multicol

Scientific paper

10.1007/s100530050058

A fast simulation algorithm for the calculation of multitime correlation functions of open quantum systems is presented. It is demonstrated that any stochastic process which ``unravels'' the quantum Master equation can be used for the calculation of matrix elements of reduced Heisenberg picture operators, and thus for the calculation of multitime correlation functions, by extending the stochastic process to a doubled Hilbert space. The numerical performance of the stochastic simulation algorithm is investigated by means of a standard example.

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