Dynamics of Bloch vectors and channel capacity of two non-identical charge qubits

被引：4

作者：

Metwally, Nasser ^{[1
,2
]}

Abdel-Aty, Mahmould ^{[1
,3
]}

Obada, A. -S. F. ^{[4
]}

机构：

[1] Univ Bahrain, Dept Math, Coll Sci, Isa Town 32038, Bahrain

[2] S Valley Univ, Fac Sci, Dept Math, Aswan, Egypt

[3] Sohag Univ, Fac Sci, Dept Math, Sohog 82524, Egypt

[4] Al Azhar Univ, Fac Sci, Dept Math, Cairo, Egypt

来源：

PHYSICS LETTERS A | 2009年 / 373卷 / 10期

关键词：

Charge qubit; Bloch vectors entanglement; Capacity; COOPER-PAIR-BOX; CONTROLLED COUPLINGS; QUANTUM COMPUTATION; STATES; ALGORITHM; DISENTANGLEMENT; IMPLEMENTATION; ENTANGLEMENT; DECOHERENCE; CAVITY;

D O I：

10.1016/j.physleta.2009.01.017

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have considered a system of two superconducting charge qubits capacitively coupled to a microwave resonator. By means of the Bloch vectors and cross dyadic we quantify the degree of entanglement contained in the generated entangled state in different regimes. We show the important roles played by initial state settings, Coupling constant and the mean photon number on generating entangled states with high degree of entanglement and high capacity. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：927 / 933

页数：7

共 40 条

[1] Synthesis of maximally entangled mixed states and disentanglement in coupled Josephson charge qubits [J].