Topological two-particle dynamics in a periodically driven lattice model with on-site interactions

TL;DR

This paper proposes a feasible Floquet protocol for observing topological two-particle bound state dynamics with interactions, suitable for digital quantum computers, highlighting entanglement and differences from single-particle behavior.

Contribution

It introduces a realistic, implementable scheme for topological two-particle dynamics in interacting lattice models using time-dependent hoppings.

Findings

Robust topological two-particle bound state dynamics demonstrated

Distinct signatures of entanglement identified

Protocol compatible with existing quantum computing platforms

Abstract

We develop a realistic protocol to observe a robust topological dynamics of two-particle bound states in a lattice model with on-site interactions and suitably designed time-dependent hoppings. This Floquet scheme can be realistically implemented on existing digital quantum computer platforms. Marked differences from the topological single-particle dynamics of two independent particles and clear signatures of the entanglement between the two constituent particles are highlighted.