Obtaining Ultra-cold Atoms by Optical Molasses Directly from Vapor

Abstract

Abstract: Usually the magneto-optical trap(MOT)is used to obtain the cold atoms from the vapor. It is reported that experiments for obtaining the ultra-cold cesium atoms by optical molasses directly from the vapor cell without MOT. The lowest temperature achieved for the cesium atomic cloud was 3μK. The relationship between the temperature and the detuning of cooling laser was measured.

Key words: laser cooling, optical molasses, super cold atoms, MOT

摘要： 报告了采用直接从铯蒸汽气室而不用磁光阱实现了光学粘团的方法。用此办法得到了3μΚ的铯的超冷原子团。这是我国目前用激光冷却方法得到的最低温度。具体描述了实验装置和方法，以及测量温度的拟合方法。

关键词: 激光冷却, 光学粘团, 超冷原子, 磁光阱

CLC Number:

HOU Jidong,WANG Xiaohui,CHEN Xuzong,YANG Donghai,WANG Yiqiu. Obtaining Ultra-cold Atoms by Optical Molasses Directly from Vapor[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

侯继东,王晓辉,陈徐宗,杨东海,王义遒. 直接从气室获得3μΚ超低温铯原子光学粘团[J]. 北京大学学报（自然科学版）.

[1]	PENGMAO Zhaxi, CAI Zhijie, CAIRANG Zhuoma. Construction of Tibetan Emotional Speech Database [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2023, 59(5): 773-781.
[2]	YANG Xinyu, LI Peijun. Mapping Corn Seedling Using Spectral, Morphological Features and Hough Transformation from UAV Images [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2023, 59(5): 843-853.
[3]	YAO Zhaoyuan, MA Lei, WAN Wei, SONG Benqin, WANG Weihong, DENG Jiwei, XIAO Lei, JI Rui, WEI Zhihao, CUI Yaokui. Consistency Assessment of Remote Sensing Dataset Based on Deep Learning [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2023, 59(4): 563-568.
[4]	PANG Fangfang, CHEN Wei, SU Ying, GUAN Ruiyuan. Empathy Differences between the Elderly and the Young: Discrepancies in Positive and Negative Emotions [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2023, 59(1): 161-169.
[5]	YU Yashen, HU Yuhan, ZHANG Shiqiu. A Case Study on Cost-effectiveness of Accelerated Vehicle Retirement Programs in Beijing [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2022, 58(4): 763-770.
[6]	LIU Zhe, ZHAO Weilun, TIAN Xiaoqing, SANG Yueyang, QU Yonglin, REN Jingjing, LI Chengcai. Retrieval of Ground PM2.5 Concentrations in Eastern China Using Data from Himawari-8 Satellite [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2022, 58(3): 443-452.
[7]	HUANG Jin, XU Shi, CAI Ercong, WU Zhijie, GUO Meimei, ZHU Jia. An Emotion-Cause Pair Extraction Model Based on Multichannel Compact Bilinear Pooling [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2022, 58(1): 21-28.
[8]	SHEN Xiaoxue, ZHANG Zhi, ZHAI Chaoyang, LI Ruili. A Meta-Analysis of the Overall Accuracy of Extent and Species of the Coastal Mangroves [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2022, 58(1): 135-146.
[9]	FU Hongpeng, WANG Zhifang, JIE Hua, WANG Lu. Emotional Characteristics and Influencing Factors of Urban Park Users: A Case Study of South China Botanical Garden and Yuexiu Park [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2021, 57(6): 1108-1120.
[10]	LIU Zhong, WANG Xin’an, LI Qiuping, ZHAO Tianxia. Research of Sleep Staging Algorithms Based on ECG and Body Motion Signals [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2021, 57(5): 833-840.
[11]	WU Liangqing, LIU Qiyuan, ZHANG Dong, WANG Jiancheng, LI Shoushan, ZHOU Guodong. Multimodal Emotion Recognition with Auxiliary Sentiment Information [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2020, 56(1): 75-81.
[12]	CHENG Junyi, ZHANG Xianfeng, SUN Min, LUO Peng, YANG Wanting. Random Forest Model for the Estimation of Fractional Vegetation Coverage Based on a UAV-Ground Co-Sampling Strategy [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2020, 56(1): 143-154.
[13]	JIANG Haimei, YE Haotian, WANG Ruojing, HAO Yong, WANG Chenggang, CAO Le. A Validation Study of MODIS-Based Ecosystem Respiration Model in a Semi-Arid Grassland of Inner Mongolia [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2019, 55(6): 1029-1037.
[14]	WANG Chunhua, WANG Lei. Identity-Based Motivation Theory and Its Implication to Academic Outcome of College Students [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2019, 55(6): 1170-1178.
[15]	PANG Zhuoyue, ZHUANG Shujie, WANG Yuqian, GAN Yiqun. Cognitive Appraisal and Meaning in Life in Recalling of Past Events: The Emotion as a Mediator [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2019, 55(5): 977-986.

Obtaining Ultra-cold Atoms by Optical Molasses Directly from Vapor

直接从气室获得3μΚ超低温铯原子光学粘团

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics