Topologically protected localised states in spin chains

TL;DR

This paper investigates spin chain models inspired by the SSH model, demonstrating topologically protected localized quantum states that are robust against noise, with potential applications in quantum information processing.

Contribution

The paper introduces spin chain models exhibiting topologically protected localized states, highlighting their robustness and potential for quantum device applications.

Findings

Topologically induced localized states in spin chains.

Robustness of these states against random noise.

Potential for quantum information applications.

Abstract

We consider spin chain families inspired by the Su, Schrieffer and Hegger (SSH) model. We demonstrate explicitly the topologically induced spatial localisation of quantum states in our systems. We present detailed investigations of the effects of random noise, showing that these topologically protected states are very robust against this type of perturbation. Systems with such topological robustness are clearly good candidates for quantum information tasks and we discuss some potential applications. Thus, we present interesting spin chain models which show promising applications for quantum devices.