Thermometry utilizing stored short-wavelength spin waves in cold atomic ensembles

doi:10.1088/1674-1056/accb4f

中国物理B ›› 2023, Vol. 32 ›› Issue (7): 74206-074206.doi: 10.1088/1674-1056/accb4f

Thermometry utilizing stored short-wavelength spin waves in cold atomic ensembles

Xingchang Wang(王兴昌), Jianmin Wang(王建民), Ying Zuo(左瀛), Liang Dong(董亮), Georgios A Siviloglou^†, and Jiefei Chen(陈洁菲)^‡

Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China

收稿日期:2023-03-05 修回日期:2023-03-27 接受日期:2023-04-07 出版日期:2023-06-15 发布日期:2023-06-21
通讯作者: Georgios A Siviloglou, Jiefei Chen E-mail:siviloglouga@sustech.edu.cn;chenjf@sustech.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 12074171, 12074168, 92265109, and 12204227), the Key Laboratory Fund from Guangdong Province, China (Grant No. 2019B121203002), and the Natural Science Foundation of Guangdong Province, China (Grant Nos. 2022B1515020096 and 2019ZT08X324).

Thermometry utilizing stored short-wavelength spin waves in cold atomic ensembles

Xingchang Wang(王兴昌), Jianmin Wang(王建民), Ying Zuo(左瀛), Liang Dong(董亮), Georgios A Siviloglou^†, and Jiefei Chen(陈洁菲)^‡

Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China

Received:2023-03-05 Revised:2023-03-27 Accepted:2023-04-07 Online:2023-06-15 Published:2023-06-21
Contact: Georgios A Siviloglou, Jiefei Chen E-mail:siviloglouga@sustech.edu.cn;chenjf@sustech.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 12074171, 12074168, 92265109, and 12204227), the Key Laboratory Fund from Guangdong Province, China (Grant No. 2019B121203002), and the Natural Science Foundation of Guangdong Province, China (Grant Nos. 2022B1515020096 and 2019ZT08X324).

摘要/Abstract

摘要： Temperature, as a measure of thermal motion, is a significant parameter characterizing a cold atomic ensemble optical quantum memory. In a cold gas, storage lifetime strongly depends on its temperature and is associated with the spin wave decoherence. Here we experimentally demonstrate a new spin wave thermometry method relying on this direct dependence. The short-wavelength spin waves resulting from the counter-propagating configuration of the control and the probe laser beams make this thermometry highly suitable for probing in situ the atomic motion in elongated clouds as the ones used in quantum memories. Our technique is realized with comparable precision for memories that rely on electromagnetically induced transparency as well as far-detuned Raman storage.

关键词: optical quantum memory, temperature measurement, collective atomic excitation, electromagnetically induced transparency

Abstract: Temperature, as a measure of thermal motion, is a significant parameter characterizing a cold atomic ensemble optical quantum memory. In a cold gas, storage lifetime strongly depends on its temperature and is associated with the spin wave decoherence. Here we experimentally demonstrate a new spin wave thermometry method relying on this direct dependence. The short-wavelength spin waves resulting from the counter-propagating configuration of the control and the probe laser beams make this thermometry highly suitable for probing in situ the atomic motion in elongated clouds as the ones used in quantum memories. Our technique is realized with comparable precision for memories that rely on electromagnetically induced transparency as well as far-detuned Raman storage.

Key words: optical quantum memory, temperature measurement, collective atomic excitation, electromagnetically induced transparency

中图分类号: (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)

42.50.Gy

03.67.Hk (Quantum communication) 42.50.Ex (Optical implementations of quantum information processing and transfer) 07.20.Dt (Thermometers)

Xingchang Wang(王兴昌), Jianmin Wang(王建民), Ying Zuo(左瀛), Liang Dong(董亮), Georgios A Siviloglou, and Jiefei Chen(陈洁菲). Thermometry utilizing stored short-wavelength spin waves in cold atomic ensembles[J]. 中国物理B, 2023, 32(7): 74206-074206.

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Thermometry utilizing stored short-wavelength spin waves in cold atomic ensembles

Thermometry utilizing stored short-wavelength spin waves in cold atomic ensembles

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