Correlations in few two-component quantum walkers on a tilted lattice

TL;DR

This paper investigates how inter-component interactions influence the dynamics and correlations of two quantum walkers on a tilted lattice, revealing effects dependent on particle statistics, initial states, and lattice tilt configurations.

Contribution

It provides a detailed analysis of interaction-induced correlations in two-component quantum walkers, considering various parameters and initial conditions, advancing understanding of multi-component quantum walk dynamics.

Findings

Interactions affect correlations non-trivially.

Particle statistics influence correlation behavior.

Initial states and lattice tilt configurations impact dynamics.

Abstract

We study the effect of inter-component interactions on the dynamical properties of quantum walkers. We consider the simplest situation of two indistinguishable non-interacting walkers on a tilted optical lattice interacting with a walker from a different component. The mediated effect of the third particle is then analyzed in the backdrop of various controlling parameters. The interaction-induced two-particle correlations are shown to be non-trivially affected by the particle statistics, choice of initial states, and tilting configurations of the lattice. Our analysis thus offers an overall picture and serves as a starting point of a study of interacting multi-component quantum walkers.