Quantum Entanglement and Teleportation of Magnons in Coupled Spin Chains

TL;DR

This paper demonstrates how coupled spin chains can be used to generate and manipulate magnonic entanglement and teleportation, paving the way for quantum information processing with spin systems.

Contribution

It introduces a novel approach to achieve quantum entanglement and teleportation of magnons using coupled spin chains with different magnetic configurations.

Findings

Parallel spin chains act as magnonic beam splitters.

Anti-parallel chains produce two-magnon squeezing and entanglement.

Designed magnonic circuits enable continuous-variable quantum teleportation.

Abstract

This study explores how entanglement and quantum teleportation of magnons can be achieved in coupled spin chain systems. By utilizing different magnetic configurations, we show that parallel spin chains function like magnonic beam splitters, whereas anti-parallel chains produce two-magnon squeezing and strong entanglement. Combining these components, we design magnonic circuits capable of continuous-variable quantum entanglement and teleportation, supported by quantum Langevin simulations.