Feshbach Projection Operator Partitioning for Quantum Open Systems: Stochastic Approach

Details Feshbach Projection Operator Partitioning for Quantum Open Systems: Stochastic Approach Feshbach Projection Operator Partitioning for Quantum Open Systems: Stochastic Approach

2011-12-03

arxiv.org/abs/1112.0661v2

Physical Review A 85, 032123 (2012)

Physics

Quantum Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevA.85.032123

Dynamics of a state of interest coupled to a non-Markovian environment is studied for the first time by concatenating the non-Markovian quantum state diffusion (QSD) equation and the Feshbach projection operator partitioning technique. An exact one-dimensional stochastic master equation is derived as a general tool for controlling an arbitrary component of the system. We show that the exact one-dimensional stochastic master equation can be efficiently solved beyond the widely adapted second-order master equations. The generality and applicability of this hybrid approach is justified and exemplified by several coherence control problems concerning quantum state protection against leakage and decoherence.

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