玻色-爱因斯坦凝聚态间的光学介导纠缠

doi:10.3969/j.issn.1000-5641.2022.02.011

华东师范大学学报（自然科学版） ›› 2022, Vol. 2022 ›› Issue (2): 93-105.doi: 10.3969/j.issn.1000-5641.2022.02.011

玻色-爱因斯坦凝聚态间的光学介导纠缠

高帅¹, PRESTMatthew^1,², ILO-OKEKEEbubechukwu O.^2,³, KONDAPPANManikandan⁴, ARISTIZABAL-ZULUAGAJuan E.^1,², IVANNIKOVValentin^1,^5,^6,⁷, BYRNESTim^1,^5,^6,^7,*()

1. 华东师范大学精密光谱科学与技术国家重点实验室, 上海　200241
2. 上海纽约大学物理系, 上海　200122
3. 奥维里联邦科技大学理学院物理系, 伊莫州　460001, 尼日利亚
4. 安蒂奥基亚大学物理研究所精密科学与自然科学系，麦德林　05001000, 哥伦比亚
5. 华东师范大学-纽约大学物理联合研究中心,上海　200062
6. 国家信息研究所, 东京　101-8430, 日本
7. 纽约大学物理系, 纽约　10003, 美国

收稿日期:2021-02-19 出版日期:2022-03-25 发布日期:2022-03-28
通讯作者: BYRNESTim E-mail:tim.byrnes@nyu.edu
基金资助:
国家自然科学基金(62071301, 11850410426); 上海市科学技术委员会科研基金 (19XD1423000); 中国科学技术交流中心基金(NGA-16-001)

Optically mediated entanglement between Bose-Einstein condensates

Shuai GAO¹, Matthew PREST^1,², Ebubechukwu O. ILO-OKEKE^2,³, Manikandan KONDAPPAN⁴, Juan E. ARISTIZABAL-ZULUAGA^1,², Valentin IVANNIKOV^1,^5,^6,⁷, Tim BYRNES^1,^5,^6,^7,*()

1. State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai　200241, China
2. Department of Physics, New York University Shanghai, Shanghai　200122, China
3. Department of Physics, School of Science, Federal University of Technology, Imo State　460001, Nigeria
4. Department of Precision Science and Natural Sciences, Institute of Physics, Universidad de Antioquia UdeA, Medellín　05001000, Colombia
5. NYU-ECNU Institute of Physics at NYU Shanghai, Shanghai　200062, China
6. National Institute of Informatics, Tokyo　101-8430, Japan
7. Department of Physics, New York University, New York, NY　10003, USA

Received:2021-02-19 Online:2022-03-25 Published:2022-03-28
Contact: Tim BYRNES E-mail:tim.byrnes@nyu.edu

摘要/Abstract

摘要：

着重研究了一种在玻色-爱因斯坦凝聚态 (Bose-Einstein Condensate, BEC) 之间产生光学介导纠缠的方案. 该方案使用量子非破坏性哈密顿量, 并将BEC置于马赫-曾德(Mach-Zehnder)构型中. 结果表明, 通过对光进行测量, 可以诱导产生纠缠态. 还特别分析了纠缠态在退相干作用下的效应. 研究表明, 该纠缠态的行为表现对于原子与光的作用时间较为敏感: 当相互作用时间 $ \tau \lesssim \frac{1}{\sqrt{N}} $ 时, 该纠缠态相对稳定; 当相互作用时间 $\tau > \frac{1}{\sqrt{N}}$ 时, 该纠缠态则相对脆弱.

关键词: 玻色-爱因斯坦凝聚态, 量子非破坏性测量, 双自旋纠缠态, 退相干

Abstract:

This paper explores a method for generating optically mediated entanglement between Bose-Einstein condensates (BECs). Using a quantum nondemolition Hamiltonian with BECs placed in a Mach-Zehnder configuration, it is shown that entangled states can be induced by performing measurement on light. In particular, the effects of the entangled state in the presence of decoherence were analyzed. The behavior of the entangled state was found to be sensitive to the atom-light interaction time. The entangled state is relatively stable when the dimensionless interaction time $ \tau \lesssim \frac{1}{\sqrt{N}} $ and relatively fragile when the time is greater.

Key words: Bose-Einstein condensate, quantum nondemolition measurement, two-spin entangled state, decoherence

中图分类号:

O431.2

高帅, PRESTMatthew, ILO-OKEKEEbubechukwu O., KONDAPPANManikandan, ARISTIZABAL-ZULUAGAJuan E., IVANNIKOVValentin, BYRNESTim. 玻色-爱因斯坦凝聚态间的光学介导纠缠[J]. 华东师范大学学报（自然科学版）, 2022, 2022(2): 93-105.

Shuai GAO, Matthew PREST, Ebubechukwu O. ILO-OKEKE, Manikandan KONDAPPAN, Juan E. ARISTIZABAL-ZULUAGA, Valentin IVANNIKOV, Tim BYRNES. Optically mediated entanglement between Bose-Einstein condensates[J]. Journal of East China Normal University(Natural Science), 2022, 2022(2): 93-105.

图/表 5

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玻色-爱因斯坦凝聚态间的光学介导纠缠

Optically mediated entanglement between Bose-Einstein condensates

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