Quantum communication in the spin chain with multiplespin exchange interaction

TL;DR

This paper investigates quantum state transmission in an anisotropic Heisenberg XXZ spin chain with three-spin exchange interactions, showing enhancements in fidelity and entanglement generation due to anisotropy and multi-spin effects.

Contribution

It introduces the role of multiple spin exchange interactions in improving quantum communication efficiency in spin chain models.

Findings

Quantum communication is enhanced by anisotropic coupling.

Multi-spin interactions reduce the time for perfect state transmission.

Bell states can be generated and separated within the system.

Abstract

The transmission of quantum states in the anisotropic Heisenberg XXZ chain model with three-spin exchange interaction is studied. The average fidelity is used to evaluate the state transfer. It is found out that quantum communication can be enhanced by the anisotropic coupling and multiple spin interaction. Such spin model can reduce the time required for the perfect state transmission where the fidelity is unity. The maximally entangled Bell states can be generated and separated from the whole quantum systems.