A Quasi-1D Potential for Bose Gas Phase Fluctuations

doi:10.1088/0256-307X/36/8/080302

Chin. Phys. Lett.

2019, Vol. 36

Issue (8): 080302 DOI: 10.1088/0256-307X/36/8/080302

GENERAL

A Quasi-1D Potential for Bose Gas Phase Fluctuations

Shi-Feng Yang¹, Zi-Tong Xu², Kai Wang², Xiu-Fei Li², Yue-Yang Zhai^2,3,4**, Xu-Zong Chen^1**

¹School of Electronics Engineering and Computer Science, Peking University, Beijing 100871
²Science and Technology on Inertial Laboratory, Beihang University, Beijing 100191
³Beijing Academy of Quantum Information Sciences, Beijing 100193
⁴Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Beijing 100191

Cite this article:

Shi-Feng Yang, Zi-Tong Xu, Kai Wang et al 2019 Chin. Phys. Lett. 36 080302

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Abstract An elongated trap potential for cold atoms is designed based on a quadrupole-Ioffe configuration. Phase fluctuations in a Bose–Einstein condensate (BEC), which is confined by the trap, are studied. We simulate the atom density distribution induced by fluctuation after time of flight from this elongated trap potential and study the temperature measurement method related to the distribution. Furthermore, taking advantage of the tight confinement and radio frequency dressing technique, we propose a double well potential for splitting BECs. Our results are helpful for improving understanding of low-dimensional quantum gases and provide important guidance for atomic interferometry.

Received: 09 March 2019 Published: 22 July 2019

PACS:	03.75.Lm	(Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)
	37.10.Jk	(Atoms in optical lattices)
	03.65.Nk	(Scattering theory)
	34.50.-s	(Scattering of atoms and molecules)

Fund: Supported by the National Natural Science Foundation of China under Grant Nos 61703025, 91736028 and 61673041.

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https://cpl.iphy.ac.cn/10.1088/0256-307X/36/8/080302 OR https://cpl.iphy.ac.cn/Y2019/V36/I8/080302

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	Shi-Feng Yang
	Zi-Tong Xu
	Kai Wang
	Xiu-Fei Li
	Yue-Yang Zhai
	Xu-Zong Chen

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