Dynamical Creation of a Supersolid in Asymmetric Mixtures of Bosons

Abstract

We propose a scheme to dynamically create a supersolid state in an optical lattice, using an attractive mixture of mass-imbalanced bosons. Starting from a "molecular" quantum crystal, supersolidity is induced dynamically as an out-of-equilibrium state. When neighboring molecular wave functions overlap, both bosonic species simultaneously exhibit quasicondensation and long-range solid order, which is stabilized by their mass imbalance. Supersolidity appears in a perfect one-dimensional crystal, without the requirement of doping. Our model can be realized in present experiments with bosonic mixtures that feature simple on-site interactions, clearing the path to the observation of supersolidity.

Multimer formation in one-dimensional two-component gases and trimer phase in the asymmetric attractive Hubbard model

“…Evidence of this scenario together with a phase diagram for n = 1 has been proposed in Ref. [41] in the case of a mixture of two-component bosons for large-enough asymmetry. As the order parameter (the density) associated with this transition is independent of the statistics, we expect a similar scenario (see Sec.…”

Quantum Melting of Valence-Bond Crystal Insulators and Novel Supersolid Phase at Commensurate Density

“…Commensurate supersolids can be observed as an out-ofequilibrium state of cold atoms [13], or arising from the melting of a conventional charge-ordered insulator [14]. Recent developments of frustrated optical lattices of cold atoms [15] open new directions.…”

Isospin correlations in two-partite hexagonal optical lattices

“…Such technique is of particular significance, since quantum correlations are central to understanding spin ordering and non-local string ordering [29]. We identify ferro-and anti-ferromagnetic correlated regimes, where we find striking supersolid [30][31][32][33] and highly-entangled supercounter-fluid (SCF) phases [22,34,35], respectively.…”