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Journal of Russian Laser Research

, Volume 37, Issue 4, pp 353–360 | Cite as

Entanglement and Mixedness of a Superconducting Qubit Coupled to an Open Superconducting Cavity

  • A.-B. A. Mohamed
  • H. Eleuch
Article

Abstract

We investigate entanglement and mixedness of a superconducting qubit coupled to the damped cavity field. We introduce a new measure for the mixedness and find that the phase damping of the cavity leads to simultaneous long-death of the entropy squeezing, the purity of the qubit states, and the entanglement of the field–qubit system.

Keywords

entropy squeezing Bloch vector variance squeezing 

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.College of Science and HumanitiesPrince Sattam Bin Abdulaziz UniversityAl-AflajSaudi Arabia
  2. 2.Faculty of ScienceAssiut UniversityAssiutEgypt
  3. 3.Department of PhysicsMcGill UniversityMontrealCanada
  4. 4.Institute for Quantum Science and Engineering Texas A&M University College StationTexasUSA

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