The quantum-state diffusion model applied to open systems

  title={The quantum-state diffusion model applied to open systems},
  author={Nicolas Gisin and Ian Colin Percival},
  journal={Journal of Physics A},
A model of a quantum system interacting with its environment is proposed in which the system is represented by a state vector that satisfies a stochastic differential equation, derived from a density operator equation such as the Bloch equation, and consistent with it. The advantages of the numerical solution of these equations over the direct numerical solution of the density operator equations are described. The method is applied to the nonlinear absorber, cascades of quantum transitions… 

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