Quantum Fisher information for moving three-level atom

Quantum Fisher information for moving three-level atom Quantum information technology largely relies on a precious and fragile resource, call quantum entanglement, which exhibits a highly nontrivial manifestation of the coherent superposition of states of composite quantum systems. In this article, we discuss the correlation between the quantum entanglement measured by the von Neumann entropy and atomic quantum Fisher information by taking account the case of moving three-level atom. Our results show that there is a monotonic relation between the atomic quantum Fisher information and entanglement in the case of non-moving atom. On the other hand, we find that the atomic quantum Fisher information and entanglement exhibit an opposite changement behavior during the time evolution in the presence of atomic motion. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Quantum Fisher information for moving three-level atom

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Publisher
Springer US
Copyright
Copyright © 2013 by Springer Science+Business Media New York
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-013-0622-9
Publisher site
See Article on Publisher Site

References

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