Generation and detection of large and robust entanglement between two different mechanical resonators in cavity optomechanics

Abstract

We investigate a general scheme for generating, either dynamically or in the steady state, continuous variable entanglement between two mechanical resonators with different frequencies. We employ an optomechanical system in which a single optical cavity mode driven by a suitably chosen two-tone field is coupled to the two resonators. Significantly large mechanical entanglement can be achieved, which is extremely robust with respect to temperature.

To appear in New J. Phys. Small extensions in response to the points raised by the referee and Refs added