Arbitrarily large steady-state bosonic squeezing via dissipation

Understand

We discuss how large amounts of steady-state quantum squeezing (beyond 3 dB) of a mechanical resonator can be obtained by driving an optomechanical cavity with two control lasers with differing amplitudes.

• The scheme does not rely on any explicit measurement or feedback, nor does it simply involve a modulation of an optical spring constant.
• Instead, it uses a dissipative mechanism with the driven cavity acting as an engineered reservoir.
• It can equivalently be viewed as a coherent feedback process, obtained by minimally perturbing the quantum nondemolition measurement of a single mechanical quadrature.