大学物理 ›› 2013, Vol. 32 ›› Issue (10): 1-1.

• 著者文摘 •    下一篇

双模纠缠相干态正交基的构建与纠缠度的计算

宋世学   

  1. 济南大学物理科学与技术学院,山东济南250022
  • 出版日期:2013-10-25 发布日期:2013-10-20

Construction of orthogonal basis of two - mode entangled coherent state and its entanglement measure

  • Online:2013-10-25 Published:2013-10-20

摘要: 纠缠相干态是一类在量子信息领域有重要应用的连续变量纠缠态,由于相干态表象中的基矢不正交,导致其纠缠度计算的困难.本文给出了基于相干态本身的正交归一完备基的构建方法,简化了其纠缠度的计算,讨论了纠缠度的影响因素,并计算了常见的几种纠缠相干态的纠缠度.

关键词: 纠缠度, 正交基, 纠缠相干态

Abstract: Entangled coherent states are a type of important continuous-variable entangled states in the processing of quantum information.However,it is complicated to calculate their entanglement due to the non-orthogonality of basis vectors in the representation of coherent state.We propose a construction method of a set of complete and orthogonal bases for two-mode entangled coherent states,and simplify the calculation of their entanglement.And also,the entanglement of several typical entangled states is calculated and discussed.

Key words: entanglement measure, orthogonal basis vector, entangled coherent state

中图分类号: 

  • O431.2