Geometric phase in open systems |
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Authors: | Carollo A Fuentes-Guridi I Santos M França Vedral V |
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Affiliation: | Optics Section, The Blackett Laboratory, Imperial College, London SW7 2BZ, United Kingdom. |
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Abstract: | We calculate the geometric phase associated with 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 sources 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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