Long lifetime supersolid in a two-component dipolar Bose-Einstein condensate

TL;DR

This paper proposes a two-component dipolar Bose-Einstein condensate system that stabilizes a long-lived supersolid without relying on the Lee-Huang-Yang correction, enabling better observation of supersolid dynamics.

Contribution

It introduces a novel two-component mixture approach to create and stabilize supersolids without high-density LHY corrections, reducing atomic loss.

Findings

Supersolidity can be controlled via trap center differences.

The system suppresses atomic loss compared to single-component models.

Potential for observing long-time supersolid dynamics.

Abstract

Recent studies on supersolidity in a single-component Bose-Einstein condensate (BEC) have relied on the Lee-Huang-Yang (LHY) correction for stabilization of self-bound droplets, which however involves a high density inside the droplets, limiting the lifetime of the supersolid. Here we propose a two-component mixture of dipolar and nondipolar BECs, such as an $^{166}$Er-$^{87}$Rb mixture, to create and stabilize a supersolid without the LHY correction, which can suppress the atomic loss and may allow observation of the long-time dynamics of the supersolid. In such a system, supersolidity can be controlled by the difference in the trap centers between the two components.