Identifying strongly correlated supersolid states on the optical lattice by quench-induced \pi-states

TL;DR

This paper investigates how rapid quenches in a one-dimensional supersolid can generate distinctive coherence oscillations, serving as a tool to distinguish between mean-field and many-body supersolid states.

Contribution

It demonstrates that quench-induced coherence oscillations can reveal the quantum correlations in supersolid states, providing a new experimental diagnostic.

Findings

Unique coherence oscillations are created by the quench.

These oscillations differentiate many-body supersolids from mean-field states.

The method offers a way to probe quantum correlations in complex states.

Abstract

We consider the rapid quench of a one-dimensional strongly correlated supersolid to a localized density wave (checkerboard) phase, and calculate the first-order coherence signal following the quench. It is shown that unique coherence oscillations between the even and odd sublattice sites of the checkerboard are created by the quench, which are absent when the initial state is described by a Gutzwiller product state. This is a striking manifestation of the versatility of the far-from-equilbrium and nonperturbative collapse and revival phenomenon as a microscope for quantum correlations in complex many-body states. For the present example, this opens up the possibility to discriminate experimentally between mean-field and many-body origins of supersolidity.