Enhancing non-classicality in mechanical systems

TL;DR

This paper investigates how post-selection measurements can increase non-classicality and entanglement in mechanical systems within optomechanical networks, highlighting effective measurement strategies for state enhancement.

Contribution

It introduces methods for using Gaussian and non-Gaussian measurements to distill non-classical states and boost entanglement in mechanical oscillators.

Findings

Photon-counting measurements effectively enhance non-classicality.

Geiger-like measurements improve mechanical entanglement.

Parameter regimes identified for optimal state distillation.

Abstract

We study the effects of post-selection measurements on both the non-classicality of the state of a mechanical oscillator and the entanglement between two mechanical systems that are part of a distributed optomechanical network. We address the cases of both Gaussian and non-Gaussian measurements, identifying the values of the parameters for which simple photon-counting and Geiger-like measurements are effective in distilling a strongly non-classical mechanical state and enhancing the purely mechanical entanglement between two elements of the network.