Geometric phase distributions for open quantum systems

Details Geometric phase distributions for open quantum systems Geometric phase distributions for open quantum systems

2004-05-11

arxiv.org/abs/quant-ph/0405052v2

Phys. Rev. Lett. 93, p. 260402 (2004)

Physics

Quantum Physics

Some minor revisions, references updated

Scientific paper

10.1103/PhysRevLett.93.260402

In an open system, the geometric phase should be described by a distribution. We show that a geometric phase distribution for open system dynamics is in general ambiguous, but the imposition of reasonable physical constraints on the environment and its coupling with the system yields a unique geometric phase distribution that applies even for mixed states, non-unitary dynamics, and non-cyclic evolutions.

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