Robustness of spin-chain state-transfer schemes

TL;DR

This paper reviews various approaches to the robustness of spin-chain state-transfer schemes, highlighting their strengths and limitations to guide future research in quantum communication networks.

Contribution

It provides a comprehensive review of alternative methods for robust quantum state transfer in spin chains, focusing on approaches beyond the authors' own research.

Findings

Different schemes exhibit varying robustness to imperfections

Some approaches improve fidelity under realistic conditions

The review identifies promising directions for future research

Abstract

This is a shortened and slightly edited version of a chapter in the collection "Quantum State Transfer and Network Engineering", edited by G.M. Nikolopoulos and I. Jex, where we review our own research about the robustness of spin-chain state-transfer schemes along with other approaches to the topic. Since our own research is documented elsewhere to a large extent we here restrict ourselves to a review of other approaches which might be useful to other researchers in the field.