Harnessing Brillouin Interaction in Rare-earth Aluminosilicate Glass Microwires for Optoelectromechanic Quantum Transduction

TL;DR

This paper proposes using Brillouin interactions in rare-earth aluminosilicate glass microwires to enhance quantum transduction efficiency between optical and microwave signals, addressing losses in existing methods.

Contribution

It introduces a novel approach utilizing Brillouin interactions in glass microwires for efficient quantum transduction, improving conversion efficiency over traditional techniques.

Findings

Achieved ~45% conversion efficiency using Brillouin interactions.

Successfully converted 195.57 THz optical signals to 325.08 MHz microwave signals.

Demonstrated potential for improved optoelectromechanical quantum transduction.

Abstract

Quantum transduction, the process of converting quantum signals from one form of energy to another is a key step in harnessing different physical platforms and the associated qubits for quantum information processing. Optoelectromechanics has been one of the effective approaches to undertake transduction from optical-to-microwave signals, among others such as those using atomic ensembles, collective magnetostatic spin excitations, piezoelectricity and electro-optomechanical resonator using Silicon nitride membrane. One of the key areas of loss of photon conversion rate in optoelectromechanical method using Silicon nitride nanomembranes has been those in the electro-optic conversion. To address this, we propose the use of Brillouin interactions in a fiber mode that is allowed to be passed through a fiber taper in rare-earth Aluminium glass microwires. It suggests that we can efficiently convert a $195.57$ THz optical signal to a $325.08$ MHz microwave signal with the help of Brillouin interactions, with a whispering stimulated Brillouin scattering mode yielding a conversion efficiency of $\sim45$\%.