Abstract
Abstract
We consider an attractive quasi-one dimensional spin-orbit coupled Bose–Einstein condensate (SOC BEC) confined in a periodic potential produced by the combination of linear and nonlinear optical lattices, and study the effects of squeezing a stripe soliton by varying the inter-atomic interaction in the nonlinear lattice. It is observed that the nodes on the soliton arising entirely due to the effect of spin–orbit coupling tend to disappear as we increase the squeezing effect to finally get a stable fundamental soliton. This leads us to conclude that external pressure can reduce the effect of spin–orbit coupling in the SOC BEC and even convert the system to a traditional BEC without spin–orbit coupling. We make use of an information theoretic measure to visualize how does the atomic density distribution in the condensate respond to continual reduction in the spin–orbit coupling effect.
Funder
Science and Engineering Research Board
Subject
Condensed Matter Physics,Mathematical Physics,Atomic and Molecular Physics, and Optics