Coherent control and feedback cooling in a remotely-coupled hybrid atom-optomechanical system

Abstract

Cooling to the motional ground state is an important first step in the preparation of nonclassical states of mesoscopic mechanical oscillators. Light-mediated coupling to a remote atomic ensemble has been proposed as a method to reach the ground state for low frequency oscillators. The ground state can also be reached using optical measurement followed by feedback control. Here we investigate the possibility of enhanced cooling by combining these two approaches. The combination, in general, outperforms either individual technique, though atomic ensemble-based cooling and feedback cooling each individually dominate over large regions of parameter space.

28 pages, 5 figures, 2 tables. Updated to include exemplary experimental parameters and expanded discussion of noise sources

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Cited by in corpus (4)

• Sympathetic cooling of a membrane oscillator in a hybrid mechanical-atomic system
• Hybrid optomechanical cooling by atomic $\Lambda$ systems
• Cold atoms as a coolant for levitated optomechanical systems
• Long Distance Coupling of a Quantum Mechanical Oscillator to the Internal States of an Atomic Ensemble