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Name:
 YUN Enxue
Education:
  
Positions:
  
Academic
title:
 Researcher
Postal Code:
 710600
Subject
categories:
  
Mailing
Address:
  
E-mail:
 yunenxue@ntsc.ac.cn

Resume:
PROFESSIONAL EXPERIENCE 
2017-present  Researcher of Physics, NTSC
2012-2016   Postdoctoral fellow at Sytèmes de Référence Temps Espace (SYRTE), Observatoire de Paris, France

EDUCATION 
2012  Ph.D. in Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, China 
2006  B.S. in Science and Technology of Electronic Information, Civil Aviation University of China, China
Direction:
Atomic clocks, gyroscopes, ultra-low noise laser & microwave 
Achievements:
 
Article:
1. “High-performance coherent population trapping atomic clock with direct-modulation distributed Bragg reflector laser,” Peter Yun*, Qinglin Li, Qiang Hao, Guobin Liu, Emeric de Clercq, Stephane Guerandel, Xiaochi Liu, Sihong Gu, Yuping Gao and Shougang Zhang, Metrologia, 58 045001(2021)
2. “A low phase noise microwave source for high performance CPT Rb atomic clock”, Xiaodong Li, Peter Yun*, Qinglin Li, Bowen Ju, Shaoshao Yu, Qiang Hao, Runchang Du, Feng Xu, Wenbing Li, Yuping Gao, Shougang Zhang, Electronics Letters, 2021, https://doi.org/10.1049/ ell2.12222
3. “Towards a Miniaturized CPT Atomic Clock based on Constructive Polarization Modulation”,  Li Qinglin, Yun Peter, Yu Shaoshao, Li Xiaodong, Zhang Shuhong, Ju Bowen, Wang Xin, Hao Qiang, Gao Yuping, Zhang Shougang, Journal of Astronautic Metrology and Measurement 40, 22-26 (2020)
4. “Microwave Pulse-Coherent Technique Based Clock with A Novel Magnetron-type Cavity,” Qiang Hao, Wenxiang Xue, Wenbing Li, Feng Xu, Xin Wang, Wenge Guo, Peter Yun*, Shougang Zhang*, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, DOI: 10.1109/TUFFC.2019.2955574 (2019)
5. “High-performance coherent population trapping clock with polarization modulation,” Peter Yun, Francois Tricot, Claudio Eligio Calosso, Salvatore Micalizio, Bruno Francois, Rodolphe Boudot, Stephane Guerandel, and Emeric de Clercq, Physical Review Applied 7, 01401 (2017) 
6. “A high-performance Raman-Ramsey Cs vapor cell atomic clock,” Moustafa Abdel Hafiz, Grégoire Coget, Peter Yun, Stéphane Guérandel, Emeric de Clercq, and Rodolphe Boudot,，Journal of Applied Physics 121, 104903 (2017)
7. “Coherent population trapping with polarization modulation,” Peter Yun, Emeric de Clercq and Stéphane Guérandel, Journal of Applied Physics 119, 244502 (2016)
8. “Constructive polarization modulation for coherent population trapping clock,” Peter Yun, Jean-Marie Danet, David Holleville, Emeric de Clercq and Stéphane Guérandel, Applied Physics Letters 105, 231106 (2014)
9. “A chip scale lin⊥lin quasi-bichromatic laser scheme,” Bozhong Tan, Peter Yun, Jing Yang, Yuan Tian, and Sihong Gu, Applied Physics Letters 102, 161117 (2013)
10. “Quasi-bichromatic laser for the lin⊥lin coherent population trapping clock,” Peter Yun, Bozhong Tan, Wei Deng, Jing Yang, and Sihong Gu, Review of Scientific Instruments, 83, 093111 (2012)
11. “Multipulse Ramsey-CPT interference fringes for the 87Rb clock transition,” Peter Yun, Yi Zhang, Guobin Liu, Wei Deng, Li You and Sihong Gu, Europhysics Letters, 97 , 63004 (2012)
12. “High coherent bi-chromatic laser with gigahertz splitting produced by the high diffraction orders of acousto-optic modulator used for coherent population trapping experiments,” Peter Yun, Bozhong Tan, Wei Deng and Sihong Gu, Review of Scientific Instruments, 82, 123104 (2011)
Community service:
 
Commitment to research the situation:
1. High-performance and compact atomic clocks
The current chip-scale atomic clocks (CSAC) based on the CPT occupy volume similar to that of a matchbox. It is an ideal choice for the applications which require precise time signals while has tight restrictions on clock size, power consumption and weight, thus it has already been applied to drone cruises, portable satellite receivers, underwater resource exploration, etc.
However, the frequency stability of the present CSAC is limited to the level of 3E-10@1s. There is still much room for its frequency stability to improve for the applications that need higher precision time signal, such as deep space exploration, satellite navigation, high-speed communication, fire and underground search and rescue, and underwater vehicle navigation.
Focus on the issue of high-performance and compact CPT atomic clock, we have proposed a scheme based on direct modulation narrow linewidth distributed Bragg reflector (DBR) laser diode plus a circularly polarized light CPT configuration, and demonstrated an encouraging short-term fractional frequency stability at the level of 3.6 E-13 τ -1/2 (4 ~ 200 s), and goes down to 1.8 E-14 at 200 s averaging time. Furthermore, with help of micro-integrated technology, we’re going to further integrate it to a very compact CPT atomic clock. 
Experimental setup for high-performance miniaturized CPT atomic clock, the frequency stability measurement, and an illustration of highly compact atomic clock module.