New features of Wehrl entropy and Wehrl PD of a single Cooper-pair box placed inside a dissipative cavity

被引:39
作者
Abdel-Khalek, S. [1 ]
Obada, A. -S. F. [2 ]
机构
[1] Sohag Univ, Fac Sci, Dept Math, Sohag 82524, Egypt
[2] Al Azhar Univ, Fac Sci, Dept Math, Cairo, Egypt
关键词
Cooper-pair box; Dissipative cavity; Wehrl entropy; Q-function; JAYNES-CUMMINGS MODEL; INFORMATION ENTROPY; JOSEPHSON-JUNCTION; NONCLASSICAL PROPERTIES; QUANTUM SUPERPOSITION; PHASE DISTRIBUTIONS; JC MODEL; STATES; COMPUTATION; EQUATIONS;
D O I
10.1016/j.aop.2010.05.011
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In this paper, we discuss the coherence of a single Cooper-pair box irradiated by a single-mode quantized field in a coherent state inside a phase-damped cavity. Analytic results under certain parametric conditions are obtained, by means of which we analyze the influence of dissipation on the Wehrl entropy and Wehrl phase distribution. An interesting relation between the coherence and the dissipation effect is observed. (c) 2010 Elsevier Inc. All rights reserved.
引用
收藏
页码:2542 / 2549
页数:8
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