Entanglement control in a superconducting qubit system by an electromagnetic field

被引：0
|
作者：
Y. Q. Zhang
J. B. Xu
机构：
[1] Zhejiang University,Zhejiang Institute of Modern Physics and Physics Department
来源：
The European Physical Journal D | 2011年 / 63卷
关键词：
Reduce Density Matrix; Entanglement Dynamic; Entanglement Sudden Death; Werner State; Bipartite Quantum System;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
By making use of the dynamical algebraic method we investigate a quantum system consisting of superconducting qubits interacting with data buses, where the qubits are driven by time-dependent electromagnetic field and obtain an explicit expression of time evolution operator. Furthermore, we explore the entanglement dynamics and the influence of the time-dependent electromagnetic field and the initial state on the entanglement sudden death and birth for the system. It is shown that the entanglement between the qubit and bus as well as the entanglement sudden death and birth can be controlled by the time-dependent electromagnetic field.
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