Hierarchy of stochastic pure states for open quantum system dynamics.
We derive a hierarchy of stochastic evolution equations for pure states (quantum trajectories) for open quantum system dynamics with non-Markovian structured environments. This hierarchy of pure states (HOPS) is generally applicable and provides the exact reduced density operator as an ensemble average over normalized states. The corresponding nonlinear equations are presented. We demonstrate that HOPS provides an efficient theoretical tool and apply it to the spin-boson model, the calculation of absorption spectra of molecular aggregates, and energy transfer in a photosynthetic pigment-protein complex.
Institut für Theoretische Physik, Technische Universität Dresden, D-01062 Dresden, Germany.
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D
Suess
Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, 01187 Dresden, Germany.
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A
Eisfeld
Institut für Theoretische Physik, Technische Universität Dresden, D-01062 Dresden, Germany.
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Strunz