Cold Atom Cloud with High Optical Depth Measured with Large Duty Cycle

We present a cold atom system with a dark-line two-dimensional magneto-optical trap, to increase the atomic density by suppressing the atomic radiation pressure. Optical depth （OD） and duty cycle are used to evaluate the system performance. We demonstrate a 100% increase in OD with the dark line, an...

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Bibliographic Details
Published inChinese physics letters Vol. 32; no. 6; pp. 96 - 99
Main Author 张骏 顾振杰 钱鹏 韩枝光 陈洁菲
Format Journal Article
LanguageEnglish
Published 01.06.2015
Subjects
Clouds
Cold atoms
Density
Performance evaluation
Quantum phenomena
Radiation pressure
Retarding
光学厚度
冷原子云
原子密度
原子系统
大占空比
磁光阱
评估系统
辐射压力
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ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/32/6/064211

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Summary:We present a cold atom system with a dark-line two-dimensional magneto-optical trap, to increase the atomic density by suppressing the atomic radiation pressure. Optical depth （OD） and duty cycle are used to evaluate the system performance. We demonstrate a 100% increase in OD with the dark line, and obtain an ultrahigh OD of 264 with 10% for the duty cycle. Also, with an efficient dark line region, the OD could maintain above i00 with duty cycle as high as 30%. The cold atomic ensemble with an ultrahigh OD with a 10%-30% duty cycle is particularly advantageous in quantum i~formation processing and communication.
Bibliography:ZHANG Jun, GU Zhen-Jie, QIAN Peng, nAN Zhi-Guang, CHEN Jie-Fei（Department of Physics, East China Normal University, Shanghai 200062）
11-1959/O4
We present a cold atom system with a dark-line two-dimensional magneto-optical trap, to increase the atomic density by suppressing the atomic radiation pressure. Optical depth （OD） and duty cycle are used to evaluate the system performance. We demonstrate a 100% increase in OD with the dark line, and obtain an ultrahigh OD of 264 with 10% for the duty cycle. Also, with an efficient dark line region, the OD could maintain above i00 with duty cycle as high as 30%. The cold atomic ensemble with an ultrahigh OD with a 10%-30% duty cycle is particularly advantageous in quantum i~formation processing and communication.
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ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/32/6/064211