Quantum deficits and correlations of two superconducting charge qubits

被引：5
|
作者：
Metwally, Nasser [1 ,2 ]
Abdel-Aty, Mahmoud [1 ,3 ]
机构：
[1] Univ Bahrain, Dept Math, Coll Sci, Isa Town 32038, Bahrain
[2] S Valley Univ, Dept Math, Fac Sci, Aswan, Egypt
[3] Sohag Univ, Dept Math, Fac Sci, Sohag 82524, Egypt
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2009年 / 469卷 / 2-3期
关键词：
Quantum deficits; Superconducting charge qubits; STATES; ENTANGLEMENT; OSCILLATIONS;
D O I：
10.1016/j.physc.2008.12.011
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：111 / 115
页数：5
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