Particle statistics and lossy dynamics of ultracold atoms in optical lattices

TL;DR

This paper investigates how particle loss affects the dynamics of ultracold spinless fermions and hard-core bosons in one-dimensional optical lattices, highlighting differences due to quantum statistics and potential experimental signatures.

Contribution

It provides a comparative analysis of particle loss effects on fermionic and bosonic gases, revealing unique signatures arising from their exchange symmetries in lattice systems.

Findings

Particle loss induces distinguishable local density signatures for fermions and bosons.

Differences in local quantities are due to exchange symmetry, observable in experiments.

Signatures can be measured with quantum gas microscopes.

Abstract

Experimental control over ultracold quantum gases has made it possible to investigate low-dimensional systems of both bosonic and fermionic atoms. In closed 1D systems there are a lot of similarities in the dynamics of local quantities for spinless fermions and strongly interacting "hard-core" bosons, which on a lattice can be formalised via a Jordan-Wigner transformation. In this study, we analyse the similarities and differences for spinless fermions and hard-core bosons on a lattice in the presence of particle loss. The removal of a single fermion causes differences in local quantities compared with the bosonic case, because of the different particle exchange symmetry in the two cases. We identify deterministic and probabilistic signatures of these dynamics in terms of local particle density, which could be measured in ongoing experiments with quantum gas microscopes.