数学物理学报 ›› 2022, Vol. 42 ›› Issue (1): 1-8.

• 论文 •    下一篇

具有已知约化态的无限维量子系统态的秩

杨舒媛1,3(),贺衎2,3,*()   

  1. 1 太原理工大学信息与计算机学院 太原 030024
    2 中国科学院量子信息重点实验室 合肥 230026
    3 太原理工大学数学学院 太原 030024
  • 收稿日期:2021-01-27 出版日期:2022-02-01 发布日期:2022-02-23
  • 通讯作者: 贺衎 E-mail:yangshuyuan2000@163.com;hekanquantum@163.com
  • 作者简介:杨舒媛, E-mail: yangshuyuan2000@163.com
  • 基金资助:
    国家自然科学基金(11771011);国家自然科学基金(12071336);中国科学院量子信息重点实验室开放课题

Ranks of Quantum States with Prescribed Reduced States in an Infinite Dimensional Quantum System

Shuyuan Yang1,3(),Kan He2,3,*()   

  1. 1 College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024
    2 Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026
    3 College of Mathematics, Taiyuan University of Technology, Taiyuan 030024
  • Received:2021-01-27 Online:2022-02-01 Published:2022-02-23
  • Contact: Kan He E-mail:yangshuyuan2000@163.com;hekanquantum@163.com
  • Supported by:
    the NSFC(11771011);the NSFC(12071336);the Key Laboratory of Quantum Information, University of Science and Technology of China

摘要:

$ H$$ K$为两个无限维量子系统(即无限维复Hilbert空间).令$ \rho$$ H\otimes K$上的量子态,在已知其两个约化态$ tr_H(\rho)$$ tr_K(\rho)$的情况下,该文确定$ \rho$所有可能的秩.

关键词: 量子态, 约化态, 偏迹,

Abstract:

Suppose that $ H$ and $K $ are two infinite dimensional quantum systems (i.e. infinite dimensional complex Hilbert space). Let $\rho $ be a quantum state on $ H\otimes K$ with two reduced states $tr_H(\rho) $ and $ tr_K(\rho)$. Then all possible ranks of $\rho $ are determined in this paper.

Key words: Quantum state, Reduced state, Partial trace, Rank

中图分类号: 

  • O177.1