Microwave-Optical Entanglement from Pulse-pumped Electro-optomechanics

TL;DR

This paper demonstrates microwave-optical photon entanglement using pulse-pumped electro-optomechanics, highlighting its potential for quantum transduction with reduced heating effects and verified entanglement through Bell inequality violation.

Contribution

It introduces a pulse-pumped scheme for generating entangled microwave-optical photon pairs with lower heating, and verifies entanglement via Bell inequality in an electro-optomechanical system.

Findings

Photon pairs generated via weak parametric-down-conversion.

Entanglement confirmed by Bell inequality violation.

Lower laser-induced heating with pulse pumping.

Abstract

Entangling microwave and optical photons is one of the promising ways to realize quantum transduction through quantum teleportation. This paper investigates the entanglement of microwave-optical photon pairs generated from an electro-optomechanical system driven by a blue-detuned pulsed Gaussian pump. The photon pairs are obtained through weak parametric-down-conversion, and their temporal correlation is revealed by the second-order correlation function. We then study the discrete variable entanglement encoded in the time bin degree of freedom, where entanglement is identified by Bell inequality violation. Furthermore, we estimate the laser-induced heating and show that the pulse-pumped system features lower heating effects while maintaining a reasonable coincidence photon counting rate.