Entanglement dynamics in a quantum-classical hybrid of two q-bits and one oscillator

TL;DR

This paper explores entanglement behavior in a hybrid quantum-classical system comprising two q-bits and a classical oscillator, revealing unique dynamics and potential experimental applications.

Contribution

It introduces a hybrid coupling model for two q-bits and a classical oscillator, analyzing entanglement evolution within this framework.

Findings

Entanglement can both evolve and remain static depending on system parameters.

The hybrid model predicts specific entanglement dynamics not seen in purely quantum systems.

Potential application in hybrid cooling schemes is identified.

Abstract

We investigate new features, especially of entanglement dynamics, which arise in a quantum-classical hybrid. As a model, we study the coupling between two quantum mechanical two-level systems, i.e. two q-bits, and a classical harmonic oscillator. Their interaction is described by a hybrid coupling, in accordance with a recently developed quantum-classical hybrid theory. We discuss various situations in which entanglement of the q-bits does (not) evolve. Furthermore, we point out an experimental application in a hybrid cooling scheme and indicate topics for future study.