Speaker
Description
We provide an argument to infer stationary entanglement
between light and mechanical oscillator based on measurement of light only. We propose an experimentally realizable scheme involving an
optomechanical cavity driven by a resonant, continuous-wave field operating in the non-sideband-resolved regime. This corresponds to the conventional configuration of an optomechanical position- or force-sensor. We show
analytically that entanglement between mechanics and
output-field of the cavity can be inferred from the measurement of squeezing in Einstein-Podolski-Rosen
quadratures of suitable temporal modes of the stationary light-field.
Squeezing can reach levels of up to 50% of noise reduction below shot-noise in the limit of large cooperativity. Entanglement persists even in the limit of small cooperativity.
