Geometric phase in open systems
Geometric phase in open systems
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.
160402/1-160402/4
Carollo, A.
9fde8df1-b218-4b1c-be02-92580bcd0587
Fuentes-Guridi, I.
95d5d6e9-eac5-447c-b27e-e2860671c1e6
Santos, M. França
769e01ee-fbba-46ef-8927-20daee63de00
Vedral, V.
03967f4d-6ba1-4c49-8b10-0dc83e4f8546
25 April 2003
Carollo, A.
9fde8df1-b218-4b1c-be02-92580bcd0587
Fuentes-Guridi, I.
95d5d6e9-eac5-447c-b27e-e2860671c1e6
Santos, M. França
769e01ee-fbba-46ef-8927-20daee63de00
Vedral, V.
03967f4d-6ba1-4c49-8b10-0dc83e4f8546
Carollo, A., Fuentes-Guridi, I., Santos, M. França and Vedral, V.
(2003)
Geometric phase in open systems.
Physical Review Letters, 90 (16), , [160402].
(doi:10.1103/physrevlett.90.160402).
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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Published date: 25 April 2003
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Funding Information:
A. C. acknowledges the support of “Fondazione Angelo della Riccia.” This research was supported by EPSRC, Hewlett-Packard, Elsag spa and the EU and Quiprocone Grant No. 040. M. F. S. acknowledges the support of CNPq.
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Local EPrints ID: 480311
URI: http://eprints.soton.ac.uk/id/eprint/480311
ISSN: 0031-9007
PURE UUID: 6acec650-b034-4aa6-90c6-da3943e6c3f0
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Date deposited: 01 Aug 2023 17:18
Last modified: 17 Mar 2024 13:15
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Author:
A. Carollo
Author:
I. Fuentes-Guridi
Author:
M. França Santos
Author:
V. Vedral
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