Stable Multiring and Rotating Solitons in Two-Dimensional Spin-Orbit-Coupled Bose-Einstein Condensates with a Radially Periodic Potential

Yaroslav V. Kartashov and Dmitry A. Zezyulin
Phys. Rev. Lett. 122, 123201 – Published 26 March 2019
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Abstract

We consider two-dimensional spin-orbit-coupled atomic Bose-Einstein condensate in a radially periodic potential. The system supports different types of stable self-sustained states including radially symmetric vorticity-carrying modes with different topological charges in two spinor components that may have multiring profiles and at the same time remain remarkably stable for repulsive interactions. Solitons of the second type show persistent rotation with constant angular frequency. They can be stable for both repulsive and attractive interatomic interactions. Because of the inequivalence between clockwise and counterclockwise rotation directions introduced by spin-orbit coupling, the properties of such solitons strongly differ for positive and negative rotation frequencies. The collision of solitons located in the same or different rings is accompanied by a change of the rotation frequency that depends on the phase difference between colliding solitons.

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  • Received 15 October 2018
  • Revised 10 December 2018

DOI:https://doi.org/10.1103/PhysRevLett.122.123201

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Nonlinear DynamicsAtomic, Molecular & Optical

Authors & Affiliations

Yaroslav V. Kartashov1,2 and Dmitry A. Zezyulin3

  • 1ICFO–Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain
  • 2Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow, 108840, Russia
  • 3ITMO University, St. Petersburg 197101, Russia

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Issue

Vol. 122, Iss. 12 — 29 March 2019

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