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Motion of solitons in one-dimensional spin-orbit-coupled Bose-Einstein condensates

Lin WenDepartment of Physics, Capital Normal University, Beijing 100048, ChinaQing‐Feng SunDepartment of Physics, Capital Normal University, Beijing 100048, ChinaYu ChenDepartment of Physics, Capital Normal University, Beijing 100048, ChinaDeng‐Shan WangSchool of Applied Science, Beijing Information Science and Technology University, Beijing 100192, ChinaJuntong HuDepartment of Physics, Capital Normal University, Beijing 100048, ChinaHongsheng ChenInstitute of Physics, Chinese Academy of Sciences, Beijing 100190, ChinaW.-M. LiuInstitute of Physics, Chinese Academy of Sciences, Beijing 100190, ChinaGediminas JuzeliūnasInstitute of Theoretical Physics and Astronomy, Vilnius University, Saulėtekio Avenue 3, LT-10222 Vilnius, LithuaniaBoris A. MalomedLaboratory of Nonlinear-Optical Informatics, ITMO University, St. Petersburg 197101, RussiaAn-Chun JiDepartment of Physics, Capital Normal University, Beijing 100048, China

2016en

Ochiq kirishYashil

ABI

Annotatsiya

Solitons play a fundamental role in the dynamics of nonlinear excitations. Here we explore the motion of solitons in one-dimensional Bose-Einstein condensates subjected to a spin-orbit coupling (SOC). We demonstrate that the spin dynamics of solitons is governed by a nonlinear Bloch equation. The spin dynamics affects the orbital motion of solitons leading to spin-orbit effects in the dynamics of macroscopic quantum objects (mean-field solitons). The latter perform oscillations with a frequency determined by the SOC, Raman coupling, and intrinsic nonlinearity. These findings reveal unique features of solitons affected by the SOC, which are confirmed by analytical considerations and numerical simulations of the underlying Gross-Pitaevskii equations.

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Identifikatorlar

DOI: 10.1103/physreva.94.061602

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