Atomic three-body loss as a dynamical three-body interaction

TL;DR

This paper explores how three-body atomic loss in optical lattices induces effective three-body interactions, leading to novel superfluid phases and analyzing their dynamics using advanced numerical methods.

Contribution

It introduces the concept of loss-induced three-body interactions and studies the resulting phases and dynamics with combined numerical techniques.

Findings

Large three-body loss can create effective three-body interactions.

A dimer superfluid phase can emerge for attractive two-body interactions.

The non-equilibrium dynamics of these phases are characterized in 1D.

Abstract

We discuss how large three-body loss of atoms in an optical lattice can give rise to effective hard-core three-body interactions. For bosons, in addition to the usual atomic superfluid, a dimer superfluid can then be observed for attractive two-body interactions. The non-equilibrium dynamics of preparation and stability of these phases are studied in 1D by combining time-dependent Density Matrix Renormalisation Group techniques with a quantum trajectories method.