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Quantum deficits and correlations of two superconducting charge qubits

Authors :
Metwally, Nasser
Abdel-Aty, Mahmoud
Source :
Physica C. Feb2009, Vol. 469 Issue 2/3, p111-115. 5p.
Publication Year :
2009

Abstract

Abstract: Motivated by recent experiments [Y.A. Pashkin, T. Yamamoto, O. Astafiev, Y. Nakamura, D.V. Averin, J.S. Tsai, Nature 421 (2003) 823] that show coherent oscillations of two superconducting qubits system, we consider a system of two charge qubits coupled to a common stripline microwave resonator. We discuss the separable and entangled behavior as well as the quantum and classical information deficits. Numerical computation of these quantities is performed for several regimes. We find that for less entangled states the partner can extract much more information by means of classical communication and local operations. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
09214534
Volume :
469
Issue :
2/3
Database :
Academic Search Index
Journal :
Physica C
Publication Type :
Academic Journal
Accession number :
36478055
Full Text :
https://doi.org/10.1016/j.physc.2008.12.011