Gap Solitons in Spin-Orbit-Coupled Bose-Einstein Condensates in Optical Lattices
Date
2015-04-23
Authors
ORCID
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
item.page.doi
Abstract
While different ways to realize spin-orbit coupling in Bose-Einstein condensates exist, not all are currently experimentally implementable. Here we present a detailed study of gap solitons in a Bose-Einstein condensate with experimentally realizable spin-orbit coupling and discuss two cases relating to a spin-dependent parity symmetry. In the parity symmetric case, two families of fundamental gap solitons in the second linear energy gap are demonstrated with the opposite sign of the parity, with one family having single-humped densities and the other double-humped ones. In the case of broken parity symmetry, the fundamental modes manifest spin polarization. Both families possess an opposite sign of the spin polarization.
Description
Keywords
Optics, Spin-orbit coupling, Bose-Einstein condensation, Bloch's theorm, Gap solitons
item.page.sponsorship
Rights
©2015 American Physical Society