Dissipation-Induced Mobility and Coherence in Frustrated Lattices

TL;DR

This paper demonstrates that local dissipation can induce mobility and coherence in frustrated quantum lattices, counteracting the effects of geometric frustration and interactions, with implications for experimental quantum systems.

Contribution

It reveals that purely local, Markovian dissipation can generate mobility and coherence in frustrated lattices, a novel mechanism contrary to traditional expectations.

Findings

Dissipation induces mobility in frustrated lattices.

Long-range coherence can be generated by incoherent processes.

Effects are observable in experimental driven-dissipative lattice setups.

Abstract

In quantum lattice systems with geometric frustration, particles cannot move coherently due to destructive interference between tunnelling processes. Here we show that purely local, Markovian dissipation can induce mobility and long-range first-order coherence in frustrated lattice systems that is entirely generated by incoherent processes. Interactions reduce the coherences and mobility but do not destroy them. These effects are observable in experimental implementations of driven-dissipative lattices with a flat band and non-uniform dissipation.