Impurity-induced increase in the thermal quantum correlations and teleportation in an Ising-XXZ diamond chain

TL;DR

This study investigates how impurities in an Ising-XXZ diamond chain can enhance quantum correlations and teleportation fidelity, offering insights for experimental quantum information applications.

Contribution

It demonstrates that impurity introduction significantly boosts quantum correlations and teleportation performance in an Ising-XXZ diamond chain model.

Findings

Impurity increases entanglement and quantum correlations.

Proper parameter choice enhances teleportation fidelity.

Impurity effects outperform the original impurity-free model.

Abstract

In this work we analyze the quantum correlations in a spin-1/2 Ising-XXZ diamond chain with one plaquette distorted impurity. We have shown that the introduction of impurity into the chain can significantly increase entanglement as well as quantum correlations compared to the original model, without impurity. Due to the great flexibility in the choice of impurity parameters, the model presented is very general and this fact can be very useful for future experimental measurements. In addition to entanglement and quantum coherence, we studied quantum teleportation through a quantum channel composed by a coupled of Heisenberg dimers with distorted impurity in an Ising-XXZ diamond chain, as well as fidelity in teleportation. Our analysis shows that the appropriate choice of parameters can greatly increase all the measures analyzed. For comparison purposes, we present all our results together with the results of the measurements made for the original model, without impurity, studied in previous works.