Spin orders in the supersolid phases in binary Rydberg-dressed Bose-Einstein condensates

TL;DR

This paper demonstrates that various ordered spin states can be realized in binary Rydberg-dressed Bose-Einstein condensates, revealing complex long-range interactions and potential for simulating quantum spin systems in ultracold atomic gases.

Contribution

It introduces the realization of multiple quantum spin orders in a binary Rydberg-dressed BEC system, expanding the understanding of supersolid phases and long-range interactions.

Findings

Five ordered states can be realized in the system.

Blockade phenomena occur for different excited-state atom pairs.

Long-range intra- and inter-species interactions are demonstrated.

Abstract

We show that the five possible ordered states in a quantum spin-1/2 system with long-range exchange interactions: Neel, ladder, Peierls, coincidence, and domain states, can be realized in a binary Rydberg-dressed BEC system in the supersolid phase. In such a system, blockade phenomenon is shown to also occur for pairs of different excited-state atoms, which results in similar intra- and inter-species long-range interactions between ground-state atoms. It suggests that a pseudo spin-1/2 system can be possibly formed in the ground state of ultracold rudibium.