J4 ›› 2014, Vol. 31 ›› Issue (6): 710-714.

• 量子光学 • 上一篇    下一篇

振幅阻尼信道下两量子比特的联合Kraus算子表示

杨青 甄秀兰 杨名 曹卓良   

  1. 1 安徽大学物理与材料科学学院, 安徽 合肥 230039; 2 合肥师范学院, 安徽 合肥 230061
  • 收稿日期:2014-03-06 修回日期:2014-04-08 出版日期:2014-11-28 发布日期:2014-11-17
  • 通讯作者: 杨青(1974-) 安徽合肥人,博士,副教授,主要从事量子光学与量子信息研究。 E-mail:qingyang@ahu.edu.cn

Quantum Kraus operators of two qubits for amplitude damping

YANG Qing, ZHEN Xiulan, YANG Ming, CAO Zhuoliang   

  1. 1 School of Physics and Material Science, Anhui University, Hefei 230039, China; 2 Department of Physics, Hefei Teachers College, Hefei 230061, China
  • Received:2014-03-06 Revised:2014-04-08 Published:2014-11-28 Online:2014-11-17

摘要: 振幅阻尼噪声存在于大量具有能量损失的真实量子比特系统中。本文利用两原子和单模腔共振相互作用的普遍模型, 推导了振幅阻尼信道下两量子比特系统的联合Kraus算子表示。这为解决和量子信息处理相关的具体过程提供了有效方法。 由于其普适性和计算的简便性,该方法有助于解决很多实际的物理问题。

关键词: 两量子比特系统

Abstract: Amplitude damping noise exists in many practical qubit systems with the loss of energy. The presentation of quantum Kraus operators of two-qubit system in amplitude damping channel is derived by using a common model in which two atoms are interacting with a single mode cavity resonantly. It provides a method by which concrete progress can be made on problems related to quantum information processing. Owning to its generality and convenience, this means is helpful to deal with real physical problems.