Dissipation-driven two-mode mechanical squeezed states in optomechanical systems

TL;DR

This paper introduces two dissipation-based methods to generate steady two-mode mechanical squeezed states in optomechanical systems, demonstrating that thermal noise can be mitigated without ground state cooling.

Contribution

It presents novel configurations for dissipation-driven two-mode squeezing in optomechanics, expanding the possibilities for quantum state engineering without requiring ground state cooling.

Findings

Analytical demonstration of steady two-mode squeezing via dissipation

Thermal fluctuations do not prevent squeezing without ground state cooling

Proposals are feasible with current experimental technology

Abstract

In this paper, we propose two quantum optomechanical arrangements that permit the dissipation-enabled generation of steady two-mode mechanical squeezed states. In the first setup, the mechanical oscillators are placed in a two-mode optical resonator while in the second setup the mechanical oscillators are located in two coupled single-mode cavities. We show analytically that for an appropriate choice of the pump parameters, the two mechanical oscillators can be driven by cavity dissipation into a stationary two-mode squeezed vacuum, provided that mechanical damping is negligible. The effect of thermal fluctuations is also investigated in detail and show that ground state pre-cooling of the oscillators in not necessary for the two-mode squeezing. These proposals can be realized in a number of optomechanical systems with current state-of-the-art experimental techniques.