量子电子学报 ›› 2025, Vol. 42 ›› Issue (4): 516-525.doi: 10.3969/j.issn.1007-5461.2025.04.007

• “量子精密测量与应用” 专辑 • 上一篇    下一篇

纳米光纤冷原子系统中光场二阶光子关联的测量 (特邀)

秦 伟 1,2, 丁腾龙 1,2, 蒋 源 1,2, 苏殿强 1,2, 姬中华 1,2, 郭龑强 3*, 赵延霆 1,2*   

  1. 1 山西大学激光光谱研究所, 光量子技术与器件全国重点实验室, 山西 太原 030006; 2 山西大学极端光学协同创新中心, 山西 太原 030006; 3 太原理工大学新型传感器与智能控制教育部重点实验室, 物理与光电工程学院, 山西 太原 03002
  • 收稿日期:2024-12-10 修回日期:2025-01-20 出版日期:2025-07-28 发布日期:2025-07-28
  • 通讯作者: guoyanqiang@tyut.edu.cn; zhaoyt@sxu.edu.cn E-mail:guoyanqiang@tyut.edu.cn; zhaoyt@sxu.edu.cn
  • 作者简介:秦 伟 ( 1999 - ), 山西临县人, 研究生, 主要从事基于纳米光纤的光与原子相互作用研究。E-mail: qinweisxu@163.com
  • 基金资助:
    国家重点研发计划 (2022YFA1404203), 国家自然科学基金项目 (No.12274272, 62175176, 62075154, 62475185, 62105191)

Measurement of second‐order photon correlation in a nanofiber‐based cold atoms system

QIN Wei 1,2 , DING Tenglong 1,2 , JIANG Yuan 1,2 , SU Dianqiang 1,2 , JI Zhonghua 1,2 , GUO Yanqiang3 * , ZHAO Yanting 1,2*   

  1. 1 State Key Laboratory of Quantum Optics Technologies and Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China; 2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China; 3 Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China
  • Received:2024-12-10 Revised:2025-01-20 Published:2025-07-28 Online:2025-07-28
  • Supported by:

摘要: 二阶光子关联在光场量子统计特性表征中发挥着基础且重要的作用。本文研究分析了冷原子辐射荧光与 纳米光纤波导模式耦合的光子关联特性, 实验探究了冷原子体系中原子数目对高效耦合至纳米光纤中辐射荧光二阶 光子关联的影响。对单端和双端纳米光纤出射荧光的二阶光子关联的研究结果表明, 通过调控冷原子体系中的原子 数目, 可以观察到单端二阶光子关联特性从聚束到反聚束的变化, 而双端二阶光子关联特性始终保持着反聚束的特 征。本工作揭示了冷原子与纳米光纤相互作用辐射光场的高阶光子关联特性, 并为发展冷原子全光纤量子信息平台 提供了实验基础。

关键词: 量子光学, 二阶光子关联, 纳米光纤, 冷原子, 聚束, 反聚束

Abstract: The second-order photon correlation is fundamental and crucial for characterizing quantum statistical properties of optical fields. In this paper, the photon correlation characteristics of fluorescence emitted by cold atoms coupled with nanofiber waveguide modes are investigated and analyzed, and the impact of the number of atoms on the second-order photon correlation of the radiated fluorescence coupled into the nanofiber is experimentally explored in a cold atomic system. The results of the secondorder photon correlation for the fluorescence collected from single-ended and dual-ended nanofiber show that, with the adjustment of the number of atoms in the cold atomic system, the single-ended secondorder photon correlation transits from bunching to anti-bunching, while the dual-ended second-order photon correlation consistently maintains anti-bunching features. This research reveals the high-order photon correlation properties of the radiated optical field resulting from the interaction between cold atoms and nanofiber, and provides an experimental basis for the development of a cold-atom all-fiber quantum information platform.

Key words: quantum optics, second-order photon correlation, nanofiber, cold atoms, bunching; anti-bunching

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