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Erschienen in: Optical and Quantum Electronics 12/2013

01.12.2013

Information entropy and entanglement of a superconducting qubit coupled to a cavity field with its spontaneous decay

verfasst von: A.-S. F. Obada, S. Abdel-Khalek, A.-B. A. Mohamed

Erschienen in: Optical and Quantum Electronics | Ausgabe 12/2013

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Abstract

The quantum entanglement between superconducting qubit and cavity field is described quantitatively in the presence of spontaneous decay. Depending on how how a system is quantum correlated with its environment, the entanglement dynamics between the qubit and cavity is evaluated and investigated during the dissipative process. The motivation based on recent experiments wherein the Cooper box can be used to probe the decay of the resonator superposition state due to environmental decoherence, we theoretically investigate the dynamics of entanglement measured by the negativity. Wehrl entropy and Wehrl phase distribution of a superconducting qubit coupled to a cavity field induced by a superconducting qubit-damping reservoir governed by a master equation.

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Metadaten
Titel
Information entropy and entanglement of a superconducting qubit coupled to a cavity field with its spontaneous decay
verfasst von
A.-S. F. Obada
S. Abdel-Khalek
A.-B. A. Mohamed
Publikationsdatum
01.12.2013
Verlag
Springer US
Erschienen in
Optical and Quantum Electronics / Ausgabe 12/2013
Print ISSN: 0306-8919
Elektronische ISSN: 1572-817X
DOI
https://doi.org/10.1007/s11082-013-9752-7

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