Long-distance entanglement and quantum teleportation in coupled cavity arrays

TL;DR

This paper presents spin models with ground states enabling long-distance entanglement in coupled cavity arrays, facilitating quantum teleportation with high scalability and thermal resilience.

Contribution

It introduces a class of quantum spin models suitable for implementation in coupled optical cavities that support long-distance entanglement and efficient quantum teleportation.

Findings

Ground states exhibit significant end-to-end entanglement.

Models enable scalable quantum teleportation channels.

Implementation feasible in engineered cavity arrays.

Abstract

We introduce quantum spin models whose ground states allow for sizeable entanglement between distant spins. We discuss how spin models with global end-to-end entanglement realize quantum teleportation channels with optimal compromise between scalability and resilience to thermal decoherence, and can be implemented straightforwardly in suitably engineered arrays of coupled optical cavities.