Generating periodic interference in Bose-Einstein condensates

doi:10.1088/1674-1056/25/9/090303

Abstract The interference between two condensates with repulsive interaction is investigated numerically by solving the one-dimensional time-dependent Gross-Pitaevskii equation. The periodic interference pattern forms in two condensates, which are prepared in a double-well potential consisting of two truncated harmonic wells centered at different positions. Dark solitons are observed when two condensates overlap. Due to the existence of atom-atom interactions, atoms are transferred among the ground state and the excited states, which coincides with the condensate energy change.

Keywords: interference pattern dark solitons Bose-Einstein condensates

Received: 04 April 2016
Revised: 04 May 2016
Accepted manuscript online:

PACS:	03.75.Kk	(Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)
	03.75.Dg	(Atom and neutron interferometry)
	03.75.Lm	(Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)

Fund: Project supported by the Doctoral Funds of Guizhou Normal College, China (Grant No. 2015BS006) and the National Natural Science Foundation of China (Grant Nos. 11271158 and 11174108).

Corresponding Authors: Shen-Tong Ji, Xue-Shen Liu
E-mail: jishentong@163.com;liuxs@jlu.edu.cn

Cite this article:

Shen-Tong Ji(冀慎统), Yuan-Sheng Wang(王元生), Yue-E Luo(罗月娥), Xue-Shen Liu(刘学深) Generating periodic interference in Bose-Einstein condensates 2016 Chin. Phys. B 25 090303

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