玻色-爱因斯坦凝聚与光场作用的保真度

doi:10.3969/j.issn.1007-5461.2024.01.009

量子电子学报 ›› 2024, Vol. 41 ›› Issue (1): 95-102.doi: 10.3969/j.issn.1007-5461.2024.01.009

玻色-爱因斯坦凝聚与光场作用的保真度

格日乐 1, 萨楚尔夫 2*, 格根图雅 2, 宫艳丽 3

( 1 内蒙古大学创业学院, 内蒙古呼和浩特 010070; 2 内蒙古师范大学物理与电子信息学院, 内蒙古呼和浩特 010022; 3 内蒙古电子信息职业技术学院, 内蒙古呼和浩特 010020 )

收稿日期:2022-05-06 修回日期:2022-07-22 出版日期:2024-01-28 发布日期:2024-01-28
通讯作者: E-mail: sacrf@imnu.edu.cn E-mail:E-mail: sacrf@imnu.edu.cn
作者简介:格日乐 ( 1980 - ), 女, 内蒙古赤峰人, 硕士, 副教授, 主要从事量子光学方面的研究。 E-mail: 1165177481@qq.com
基金资助:
内蒙古自治区高等学校科学技术研究项目 (NJZY21293, NJZY20279), 内蒙古大学创业学院自然科学基金 (N2021025)

Fidelity of quantum states in a system of atomic Bose⁃Einstein condensate interacting with light field

Gerile 1, Sachuerfu 2*, Gegentuya 2, GONG Yanli 3

( 1 Pioneer College, Inner Mongolia University, Hohhot 010070, China; 2 College of Physics and Electronic Information, Inner Mongolia Normal University, Hohhot 010022, China; 3 Inner Mongolia Electronic Information Vocational Technical College, Hohhot 010020, China )

Received:2022-05-06 Revised:2022-07-22 Published:2024-01-28 Online:2024-01-28

摘要/Abstract

摘要： 利用量子信息论和数值计算方法, 对Pólya 场态与玻色-爱因斯坦凝聚原子相互作用系统的量子态保真度演化问题进行了研究。讨论了玻色-爱因斯坦凝聚原子间的相互作用强度、 Pólya 场态概率参数和分布参数, 以及这些物理参数如何影响量子态保真度随时间的演化。研究结果表明: 上述三种物理参量均可调制信号传输中的量子态保真度, 其中光场概率参数η 对量子态保真度的变化影响最大, 当 η = 0.01 时, 量子信息保真度的值非常接近信息理想传输的情形; 另一方面, 凝聚原子间的耦合强度越大, 量子态保真度呈现出的周期性振荡也越强, 但量子态保真度的取值范围不变。

关键词: 量子光学, 保真度, 玻色-爱因斯坦凝聚原子, Pólya 态光场

Abstract: The evolution properties of quantum information fidelity in a system of atomic Bose-Einstein condensate interacting with Pólya field state have been studied using quantum information theory and numerical calculation methods. The influences of the coupling intensity among the atoms of Bose- Einstein condensates, and the probability and distribution parameters of Pólya light field on the fidelity of quantum state are mainly focused. The results indicate that the fidelity of quantum information during the transmission depends on the coupling intensity among the atoms, as well as the optical field parameters. Among the three physical parameters, the probability parameter of the light field η have a crucial effect on the fidelity of quantum state. When η = 0.01, the fidelity of quantum information is very close to that in ideal transmission process for information. On the other hand, the oscillating frequency of the system fidelity would have the larger values with the increasing of coupling intensity among the atoms of Bose- Einstein condensate, but the range of system fidelity values remains unchanged.

Key words: quantum optics, fidelity, Bose-Einstein condensate, Pólya state field

中图分类号:

O431.2

格日乐 , 萨楚尔夫 , 格根图雅 , 宫艳丽 . 玻色-爱因斯坦凝聚与光场作用的保真度[J]. 量子电子学报, 2024, 41(1): 95-102.

Gerile , Sachuerfu , Gegentuya , GONG Yanli . Fidelity of quantum states in a system of atomic Bose⁃Einstein condensate interacting with light field[J]. Chinese Journal of Quantum Electronics, 2024, 41(1): 95-102.

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玻色-爱因斯坦凝聚与光场作用的保真度

Fidelity of quantum states in a system of atomic Bose⁃Einstein condensate interacting with light field

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