Transportable and Ultra-Stable Laser System for <sup>133</sup><i>Cs</i> Rydberg Excitation
Recent progress in Rydberg atoms has enabled a wide range of applications in quantum sensing and quantum computation. In these applications, ultra-stable optical reference systems are essential to meet the requirements of a narrow linewidth and low technical noise. However, most existing systems are...
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MDPI AG
2025-06-01
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| author | Zhongxiao Xu Changtao Zhao Donghao Li |
| author_facet | Zhongxiao Xu Changtao Zhao Donghao Li |
| author_sort | Zhongxiao Xu |
| collection | DOAJ |
| description | Recent progress in Rydberg atoms has enabled a wide range of applications in quantum sensing and quantum computation. In these applications, ultra-stable optical reference systems are essential to meet the requirements of a narrow linewidth and low technical noise. However, most existing systems are confined to laboratory settings and are not suitable for measurement-site-independent applications, such as external electric field sensors. This paper presents a transportable ultra-stable optical reference system for Rydberg excitation. The system is based on a 10 cm long ultra-low-expansion glass optical cavity, and it achieves finesse values of 410 k (at 1018 nm) and 200 k (at 852 nm). After being assembled in the experimental environment, it can still operate with only minor adjustments even after being transported over 400 km. Thanks to its vibration-insensitive design, two-stage temperature control, and hybrid locking unit, the system can maintain its locking status for up to 2 h. |
| format | Article |
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| institution | Kabale University |
| issn | 2304-6732 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
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| series | Photonics |
| spelling | doaj-art-60c83014728b4ef0baf8f8974347eead2025-08-20T03:29:44ZengMDPI AGPhotonics2304-67322025-06-0112655910.3390/photonics12060559Transportable and Ultra-Stable Laser System for <sup>133</sup><i>Cs</i> Rydberg ExcitationZhongxiao Xu0Changtao Zhao1Donghao Li2State Key Laboratory of Quantum Optics Technologies and Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics Technologies and Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, ChinaState Key Laboratory of Quantum Optics Technologies and Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, ChinaRecent progress in Rydberg atoms has enabled a wide range of applications in quantum sensing and quantum computation. In these applications, ultra-stable optical reference systems are essential to meet the requirements of a narrow linewidth and low technical noise. However, most existing systems are confined to laboratory settings and are not suitable for measurement-site-independent applications, such as external electric field sensors. This paper presents a transportable ultra-stable optical reference system for Rydberg excitation. The system is based on a 10 cm long ultra-low-expansion glass optical cavity, and it achieves finesse values of 410 k (at 1018 nm) and 200 k (at 852 nm). After being assembled in the experimental environment, it can still operate with only minor adjustments even after being transported over 400 km. Thanks to its vibration-insensitive design, two-stage temperature control, and hybrid locking unit, the system can maintain its locking status for up to 2 h.https://www.mdpi.com/2304-6732/12/6/559ultra-low-expansion cavityultra-stable laser systemtransportable |
| spellingShingle | Zhongxiao Xu Changtao Zhao Donghao Li Transportable and Ultra-Stable Laser System for <sup>133</sup><i>Cs</i> Rydberg Excitation Photonics ultra-low-expansion cavity ultra-stable laser system transportable |
| title | Transportable and Ultra-Stable Laser System for <sup>133</sup><i>Cs</i> Rydberg Excitation |
| title_full | Transportable and Ultra-Stable Laser System for <sup>133</sup><i>Cs</i> Rydberg Excitation |
| title_fullStr | Transportable and Ultra-Stable Laser System for <sup>133</sup><i>Cs</i> Rydberg Excitation |
| title_full_unstemmed | Transportable and Ultra-Stable Laser System for <sup>133</sup><i>Cs</i> Rydberg Excitation |
| title_short | Transportable and Ultra-Stable Laser System for <sup>133</sup><i>Cs</i> Rydberg Excitation |
| title_sort | transportable and ultra stable laser system for sup 133 sup i cs i rydberg excitation |
| topic | ultra-low-expansion cavity ultra-stable laser system transportable |
| url | https://www.mdpi.com/2304-6732/12/6/559 |
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