Dynamics of bright–bright solitons in Bose–Einstein condensate with Raman-induced one-dimensional spin–orbit coupling

Journal Article · Thu Mar 15 00:00:00 EDT 2018 · Annals of Physics

DOI:https://doi.org/10.1016/J.AOP.2018.01.018· OSTI ID:22848303

Wen, Lin ^[1]; Zhang, Xiao-Fei ^[2]; Hu, Ai-Yuan ^[1]; Zhou, Jing ^[3]; Yu, Peng; Xia, Lei ^[1]; Sun, Qing; Ji, An-Chun ^[4]

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1. College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331 (China)
2. Key Laboratory of Time and Frequency Primary Standards, National Time Service Center, Chinese Academy of Sciences, Xi’an 710600 (China)
3. Department of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065 (China)
4. Department of Physics, Capital Normal University, Beijing 100048 (China)

We investigate the dynamics of bright–bright solitons in one-dimensional two-component Bose–Einstein condensates with Raman-induced spin–orbit coupling, via the variational approximation and the numerical simulation of Gross–Pitaevskii equations. For the uniform system without trapping potential, we obtain two population balanced stationary solitons. By performing the linear stability analysis, we find a Goldstone eigenmode and an oscillation eigenmode around these stationary solitons. Moreover, we derive a general dynamical solution to describe the center-of-mass motion and spin evolution of the solitons under the action of spin–orbit coupling. The effects of a harmonic trap have also been discussed.

• OSTI ID: 22848303
• Journal Information: Annals of Physics, Vol. 390; Other Information: © 2018 Elsevier Inc. All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-4916
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
APPROXIMATIONS
BOSE-EINSTEIN CONDENSATION
CENTER-OF-MASS SYSTEM
COMPUTERIZED SIMULATION
HARMONICS
L-S COUPLING
ONE-DIMENSIONAL CALCULATIONS
ORBITS
RAMAN EFFECT
SOLITONS
SPIN
TRAPPING
VARIATIONAL METHODS