Tunable self-assembled spin chains of strongly interacting cold atoms

TL;DR

This paper introduces a computational method for designing tunable, self-assembled spin chains of strongly interacting cold atoms, enabling high-fidelity quantum state transfer by adjusting the confining potential.

Contribution

The authors present a novel computational approach to engineer self-assembled spin chains with tunable interactions for quantum information applications.

Findings

Efficient method for modeling long 1D strongly-interacting atom systems

Ability to tailor confining potentials for desired spin chain properties

Demonstration of near-perfect quantum state transfer in designed chains

Abstract

We have developed an efficient computational method to treat long, one-dimensional systems of strongly-interacting atoms forming self-assembled spin chains. Such systems can be used to realize many spin chain model Hamiltonians tunable by the external confining potential. As a concrete demonstration, we consider quantum state transfer in a Heisenberg spin chain and we show how to determine the confining potential in order to obtain nearly-perfect state transfer.