中国物理B ›› 2017, Vol. 26 ›› Issue (5): 50501-050501.doi: 10.1088/1674-1056/26/5/050501
Matter wave interference of dilute Bose gases in the critical regime
Xuguang Yue(乐旭广), Shujuan Liu(刘淑娟), Biao Wu(吴飙), Hongwei Xiong(熊宏伟)
- 1 Wilczek Quantum Center, Zhejiang University of Technology, Hangzhou 310023, China;
2 Department of Applied Physics, Zhejiang University of Technology, Hangzhou 310023, China;
3 International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China;
4 Collaborative Innovation Center of Quantum Matter, Beijing 100871, China
Matter wave interference of dilute Bose gases in the critical regime
Xuguang Yue(乐旭广)1,2, Shujuan Liu(刘淑娟)1,2, Biao Wu(吴飙)1,3,4, Hongwei Xiong(熊宏伟)1,2
- 1 Wilczek Quantum Center, Zhejiang University of Technology, Hangzhou 310023, China;
2 Department of Applied Physics, Zhejiang University of Technology, Hangzhou 310023, China;
3 International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China;
4 Collaborative Innovation Center of Quantum Matter, Beijing 100871, China
摘要：
Ultra-cold atomic gases provide a new chance to study the universal critical behavior of phase transition. We study theoretically the matter wave interference for ultra-cold Bose gases in the critical regime. We demonstrate that the interference in the momentum distribution can be used to extract the correlation in the Bose gas. A simple relation between the interference visibility and the correlation length is found and used to interpret the pioneering experiment about the critical behavior of dilute Bose gases [Science 315 1556 (2007)]. Our theory paves the way to experimentally study various types of ultra-cold atomic gases with the means of matter wave interference.
中图分类号: (Boson systems)
- 05.30.Jp