Two-Dimensional Vortex Solitons in Spin-Orbit-Coupled Dipolar Bose–Einstein Condensates

Applied Sciences

卷:8

Jun Xu¹  Haiming Deng²  Wei Pang³  Bin Liu⁴  Yongyao Li⁴ 

[1] Center of Experimental Teaching for Common Basic Courses, South China Agriculture University, Guangzhou 510642, China;

[2] College of Electronic Information and Electrical Engineering, Xiangnan University, Chenzhou 423000, China;

[3] Experiment Teaching Center, Guangdong University of Technology, Guangzhou 510006, China;

[4] School of Physics and Optoelectronic Engineering, Foshan University, Foshan 528000, China;

关键词: vortex solitons;    gap solitons;    spin-orbit coupling;    dipole-dipole interaction;   

DOI  :  10.3390/app8101771

来源: DOAJ

【 摘 要 】

Solitons are self-trapped modes existing in various nonlinear systems. Creating stable solitons in two- and three-dimensional settings is a challenging goal in various branches of physics. Several methods have been developed theoretically and experimentally to achieve this, but few of them can support stable multi-dimensional solitons in free space. Recently, a new scheme using spin-orbit-coupling (SOC) has been proposed to create stable 2D solitons in Bose–Einstein condensates (BECs). This paper reviews recent theoretical progress on creating stable 2D solitons in spinor dipolar BEC with SOC, combined with long-range dipole-dipole interaction (DDI), Zeeman splitting (ZS) and contact nonlinearity, in free space. The continuous family of stable symmetric vortex solitons (SVS), asymmetric vortex solitons (AVS), as well as gap solitons (GS) is found via different settings. Their existence and stability conditions are summarized and discussed in detail. The mobility properties of these types of solitons are also addressed. For SVS, a potential method to manipulate its shape and mobility is investigated. These results are supposed to enrich our understanding of 2D solitons and help create multi-dimensional solitons in experiments.

【 授权许可】

Unknown