Quantum entanglement and teleportation in quantum dot

TL;DR

This paper investigates how quantum dots can be used as a resource for quantum entanglement and teleportation, analyzing the effects of various parameters on teleportation fidelity and identifying optimal measurement strategies.

Contribution

It introduces a detailed analysis of thermal entanglement and teleportation fidelity in quantum dots, highlighting optimal measurement strategies and parameter effects.

Findings

Critical temperature for disentanglement identified

Anisotropy measurements optimize teleportation fidelity

Quantum dots show high, stable transmission fidelity

Abstract

We study the thermal entanglement and quantum teleportation using quantum dot as a resource. We first consider entanglement of the resource, and then focus on the effects of different parameters on the teleportation fidelity under different conditions. The critical temperature of disentanglement is obtained. Based on Bell measurements in two subspaces, we find the anisotropy measurements is optimal to the isotropy arising from the entangled eigenstates of the system in the anisotropy subspace. In addition, it is shown that the anisotropy transmission fidelity is very high and stable for quantum dot as quantum channel when the parameters are adjusted. The possible applications of quantum dot are expected in the quantum teleportation.