Coherent control of quantum and entanglement dynamics via periodic modulations in optomechanical semi-conductor resonator coupled to quantum-dot excitons

TL;DR

This paper explores how periodic modulations of laser intensity and quantum dot resonance in an optomechanical resonator can control quantum entanglement and energy transfer, enabling advanced quantum communication applications.

Contribution

It demonstrates that combined modulations can precisely control entanglement and energy dynamics, with high entanglement achievable through QD frequency modulation alone.

Findings

High entanglement achieved by modulating QD frequency

Control over fluctuation energy transfer demonstrated

Transition from low to high dynamical entanglement with modulation

Abstract

We systematically study the influence of simultaneously modulating the input laser intensity and quantum dot (QD) resonance frequecy on the mean-field dynamics, fluctuation energy transfer and entanglement in a optomechanical semi-conductor resonator embedded with a QD. We show that the modulation and the hybrid system can be engineered to attain the desired mean-field values, control the fluctuation energy transfer and the entanglement between the various degrees of freedom. A remarkably high degree of entanglement can be achieved by modulating only the QD frequency. The interplay between the two modulations leads to an entanglement which lies between that generated solely by modulating either the QD or the pump laser intensity. A transition from low stationary to large dynamical entanglement occurs as we switch on the modulation. This study opens up new possibilities for optimal control strategies and can be used for data signal transfer and storage in quantum communication platforms.