电容耦合电荷量子比特的调控及纠缠特性

J4 ›› 2015, Vol. 32 ›› Issue (3): 328-334.

电容耦合电荷量子比特的调控及纠缠特性

夏承魏¹,梁宝龙¹,王继锁²

1. 聊城大学物理科学与信息工程学院
2. 曲阜师范大学物理工程学院

收稿日期:2015-02-06 修回日期:2015-03-08 出版日期:2015-05-28 发布日期:2015-05-28
通讯作者: 王继锁

Manipulation and entanglement of capacitive coupling charge qubits

Received:2015-02-06 Revised:2015-03-08 Published:2015-05-28 Online:2015-05-28

摘要/Abstract

摘要：

摘要：借助于狄拉克的正则量子化原理，对电容耦合的双约瑟夫森结电荷量子比特体系实施量子化。考虑到平行于约瑟夫森结面的磁场对结电流的影响，提出了一种新的电荷量子比特的调控方法，并且讨论了外加磁场作用下体系量子态时间演化的拉比振荡现象及纠缠特性。结果表明，利用该体系可以制备纠缠态，改变外加磁通Φ1和Φ2的大小能够实现对电荷量子比特及其纠缠态的有效调控。

关键词: 约瑟夫森结

Abstract:

Abstract: By virtue of the canonical quantization method, a quantization scheme for the capacitive coupling charge qubits was suggested. Considering the influence of applied magnetic field on the Josephson junction current, we therefore present a new method of controlling charge qubits and discuss the Rabi oscillation of evolution of quantum state with time and the entanglement. By using this system, entangled state can be prepared. The charge qubits can be effectively regulated with the changing applied magnetic field Φ1 and Φ2.

Key words: Josephson junction

中图分类号:

O431.2

夏承魏梁宝龙王继锁. 电容耦合电荷量子比特的调控及纠缠特性[J]. J4, 2015, 32(3): 328-334.

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