The Solid-state Physics of Rydberg-dressed Bosonic Mixtures

TL;DR

This paper investigates the complex phase behavior of two-component Rydberg-dressed Bose-Einstein condensates, revealing diverse stable ground states and dynamic emergence of structured density profiles influenced by inter- and intra-component interactions.

Contribution

It introduces a comprehensive analysis of phase structures in Rydberg-dressed bosonic mixtures, highlighting the impact of interaction ranges on ground state configurations and their dynamical formation.

Findings

Identification of ionic-like lattice ground states

Observation of density segregation into planar or tubular profiles

Demonstration of dynamic emergence of structured states

Abstract

We explore phases of two-component Rydberg-dressed Bose-Einstein condensates in three spatial dimensions. The competition between the effective ranges of inter- and intra-component soft-core interactions leads to a rich variety of ground states. These include states resembling ionic compounds with face-centered cubic or simple cubic lattice structure. Upon increasing the scattering length, the dimensionality of the symmetry-breaking is lower due to the suppression of large densities, leading to segregated planar or tubular density profiles. We also show that these states are not only stable ground states, but can also emerge dynamically upon time evolution.