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Geometric phase in open systems

A. Carollo·I. Fuentes-Guridi·M. Franca Santos·V. Vedral
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Abstract

We calculate the geometric phase associated to the evolution of a system subjected to decoherence through a quantum-jump approach. The method is general and can be applied to many different physical systems. As examples, two main source of decoherence are considered: dephasing and spontaneous decay. We show that the geometric phase is completely insensitive to the former, i.e. it is independent of the number of jumps determined by the dephasing operator.

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A. Carollo, I. Fuentes-Guridi, M. Franca Santos, V. Vedral. 2003-01-09. Geometric phase in open systems. https://doi.org/10.1103/physrevlett.90.160402

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