Dynamics of entanglement in two-qubit open system interacting with a squeezed thermal bath via dissipative interaction

Journal Article · Thu Apr 15 00:00:00 EDT 2010 · Annals of Physics (New York)

DOI:https://doi.org/10.1016/j.aop.2010.01.003· OSTI ID:21336117

Banerjee, Subhashish ^[1]; Ravishankar, V ^[1]; Srikanth, R ^[2]

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1. Raman Research Institute, Bangalore 560080 (India)
2. Poornaprajna Institute for Scientific Research, Bangalore 560080 (India)

We study the dynamics of entanglement in a two-qubit system interacting with a squeezed thermal bath via a dissipative system-reservoir interaction with the system and reservoir assumed to be in a separable initial state. The resulting entanglement is studied by making use of concurrence as well as a recently introduced measure of mixed state entanglement via a probability density function which gives a statistical and geometrical characterization of entanglement by exploring the entanglement content in the various subspaces spanning the two-qubit Hilbert space. We also make an application of the two-qubit dissipative dynamics to a simplified model of quantum repeaters.

• OSTI ID: 21336117
• Journal Information: Annals of Physics (New York), Vol. 325, Issue 4; Other Information: DOI: 10.1016/j.aop.2010.01.003; PII: S0003-4916(10)00006-0; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-4916
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
HILBERT SPACE
INTERACTIONS
MIXED STATE
PROBABILITY DENSITY FUNCTIONS
QUANTUM ENTANGLEMENT