# Chiral Supersolid in Spin-Orbit-Coupled Bose Gases with Soft-Core Long-Range Interactions

## TL;DR

This paper predicts a novel chiral supersolid phase in spin-orbit-coupled Bose gases with soft-core long-range interactions, exhibiting spontaneous circulating currents and broken chiral symmetry without external rotation or magnetic fields.

## Contribution

It introduces a new chiral supersolid phase arising from the interplay of spin-orbit coupling and long-range interactions in ultracold gases, which was not previously known.

## Key findings

- Chiral supersolid phase exhibits spontaneous circulating currents.
- Angular momentum direction can be controlled by interaction parameters.
- Phase can be observed in Rydberg-dressed Bose-Einstein condensates.

## Abstract

Chirality represents a kind of symmetry breaking characterized by the noncoincidence of an object with its mirror image and has been attracting intense attention in a broad range of scientific areas. The recent realization of spin-orbit coupling in ultracold atomic gases provides a new perspective to study quantum states with chirality. In this Letter, we demonstrate that the combined effects of spin-orbit coupling and interatomic soft-core long-range interaction can induce an exotic supersolid phase in which the chiral symmetry is broken with spontaneous emergence of circulating particle current. This implies that a finite angular momentum can be generated with neither rotation nor effective magnetic field. The direction of the angular momentum can be altered by adjusting the strength of spin-orbit coupling or interatomic interaction. The predicted chiral supersolid phase can be experimentally observed in Rydberg-dressed Bose-Einstein condensates with spin-orbit coupling.