Novel hermetically sealed device to realize unconventional phonon blockade at near-micron dimensions and milli Kelvin temperatures

TL;DR

This paper introduces a hermetically sealed device design with charged membranes operating at near-micron scales and milliKelvin temperatures, enabling the generation of antibunched single phonons for quantum applications.

Contribution

It presents a novel device architecture and analytical framework for phonon antibunching, with scalable design considerations for quantum phononics.

Findings

Design achieves phonon antibunching at near-micron sizes

Upscaling is possible at the cost of higher operating temperatures

Potential for quantum sensing and computing applications

Abstract

We propose a novel design for a hermetically sealable device consisting of charged linear and nonlinear membranes driven in the Gigahertz range in vacuum setting, as a source of antibunched single phonons. Constraints for effecting phonon antibunching are found using the stationary Liouville-von Neumann master equation. Using analytical calculations, material and geometry optimization we show that sizes of the proposed system can be upscaled to near-micrometer range, in a trade-off with the system operating temperature. The results are significant to realize quantum Phononics which has much promise as a modality for sensing and computing applications.