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Free keywords:
Cavity optomechanics, hybrid quantum systems, Fano resonance, cooling,
interference
Abstract:
Radiation pressure forces in cavity optomechanics allow for efficient cooling
of vibrational modes of macroscopic mechanical resonators, the manipulation of their
quantum states, as well as generation of optomechanical entanglement. The standard
mechanism relies on the cavity photons directly modifying the state of the mechanical
resonator. Hybrid cavity optomechanics provides an alternative approach by coupling
mechanical objects to quantum emitters, either directly or indirectly via the common
interaction with a cavity field mode. While many approaches exist, they typically
share a simple effective description in terms of a single force acting on the mechanical
resonator. More generally, one can study the interplay between various forces acting on
the mechanical resonator in such hybrid mechanical devices. This interplay can lead to
interference effects that may, for instance, improve cooling of the mechanical motion or
lead to generation of entanglement between various parts of the hybrid device. Here,
we provide such an example of a hybrid optomechanical system where an ensemble of
quantum emitters is embedded into the mechanical resonator formed by a vibrating
membrane. The interference between the radiation pressure force and the mechanically
modulated Tavis–Cummings interaction leads to enhanced cooling dynamics in regimes
in which neither force is efficient by itself. Our results pave the way towards engineering
novel optomechanical interactions in hybrid optomechanical systems.
