# Compressing the atomic cloud in a matter-wave stripe soliton

## TL;DR

This paper investigates how squeezing a stripe soliton in a spin-orbit coupled Bose-Einstein condensate affects its properties, showing that increased squeezing can suppress spin-orbit effects and stabilize a fundamental soliton.

## Contribution

It introduces a method to control spin-orbit coupling effects in BECs through external pressure, leading to potential simplification of complex quantum systems.

## Key findings

- Nodes due to spin-orbit coupling diminish with squeezing
- External pressure can suppress spin-orbit effects
- Stable fundamental soliton can be achieved

## 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.