| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Superradiance of ultracold cesium Rydberg |65D5/2> → |66P3/2> |
| Liping Hao(郝丽萍)1, Xiaoxuan Han(韩小萱)2, Suying Bai(白素英)3, Xiufen You(游秀芬)1,†, Yuechun Jiao(焦月春)4,5,‡, and Jianming Zhao(赵建明)4,5 |
1 Department of Materials and Chemical Engineering, Taiyuan University, Taiyuan 030032, China;
2 Department of Physics, Taiyuan Normal University, Jinzhong 030619, China;
3 School of Physics and Information Engineering, Shanxi Normal University, Taiyuan 030031, China;
4 State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China;
5 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China |
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Abstract We investigate Rydberg $|65{\rm D}_{5/2}\rangle \to |66{\rm P}_{3/2}\rangle$ superradiance in dense ultracold cesium atoms, where the ground atoms are excited to $|65{\rm D}_{5/2}\rangle$ Rydberg states via two-photon excitation in a standard magneto-optical trap. The superradiant spectrum of $|65{\rm D}_{5/2}\rangle \to |66{\rm P}_{3/2}\rangle$ is obtained using the state-selective field ionization technique. We observe its dynamic evolution process by varying the delay time of ionization field $t_{\rm d}$. The results show that the evolution process of $|65{\rm D}_{5/2}\rangle \to |66{\rm P}_{3/2}\rangle$ is much shorter than its radiation lifetime at room temperature, which verifies the superradiance effect. The dependence of the superradiance process on Rydberg atoms number $N_{\rm e}$ and principal quantum number ${n}$ is investigated. The results show that the superradiance becomes faster with increasing $N_{\rm e}$, while it is suppressed for stronger van der Waals (vdW) interactions. Superradiance has potential applications in quantum technologies, and the Rydberg atom is an ideal medium for superradiance. Our system is effective for studying the strong two-body interaction between Rydberg atoms.
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Received: 15 November 2023
Revised: 29 December 2023
Accepted manuscript online: 22 January 2024
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PACS:
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42.50.-p
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(Quantum optics)
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32.80.Rm
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(Multiphoton ionization and excitation to highly excited states)
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42.50.Ct
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(Quantum description of interaction of light and matter; related experiments)
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| Fund: Project supported by the Fundamental Research Program of Shanxi Province, China (Grant Nos. 202203021212018 and 202203021212405), the National Nature Science Foundation of China (Grant Nos. 12104337 and 12204292), and the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi, China (Grant No. 2022L268). |
Corresponding Authors:
Xiufen You, Yuechun Jiao
E-mail: youxiufen@tyu.edu.cn;ycjiao@sxu.edu.cn
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Cite this article:
Liping Hao(郝丽萍), Xiaoxuan Han(韩小萱), Suying Bai(白素英), Xiufen You(游秀芬), Yuechun Jiao(焦月春), and Jianming Zhao(赵建明) Superradiance of ultracold cesium Rydberg |65D5/2> → |66P3/2> 2024 Chin. Phys. B 33 054204
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