Generation of maximally entangled states in hybrid two quantum dots mediated by a spherical metal nanoparticle driven by external laser field

TL;DR

This paper theoretically investigates how to generate and control quantum entanglement between two semiconductor quantum dots mediated by a metal nanoparticle under external laser excitation, with potential applications in quantum information.

Contribution

It introduces a theoretical model for entanglement generation in a hybrid quantum dot-metal nanoparticle system driven by laser fields, highlighting parameter tuning for optimal quantum correlations.

Findings

Entanglement of formation can be achieved with proper system parameters.

External laser fields can be tuned to produce significant quantum correlations.

The hybrid system shows potential for quantum information applications.

Abstract

We theoretically study the generation of quantum correlations in a hybrid system composed by two interacting semiconductor quantum dots mediated by a metal nanoparticle and coupled to an external laser field. Interactions present in the hybrid system are treated using a semiclassical approximation except for the direct dipole-dipole interaction. We report the entanglement of formation, which gives information about entanglement quantum correlations, for continuous wave and pulsed driving applied fields. We have found that for proper values of the physical and geometrical parameters of the hybrid system the applied field can be tuned producing quantum correlations of significant value so that they can be useful in quantum information and computation processes.