Heralded Preparation and Readout of Entangled Phonons in a Photonic Crystal Cavity

Abstract

We propose a realistic protocol for the preparation and readout of mechanical Bell states in an optomechanical system. The proposal relies on parameters characterizing a photonic crystal cavity mode, coupled to two localized flexural modes of the structure, but equally applies to other optomechanical systems in the same parameter range. The nonclassical states are heralded via optical postselection and revealed in specific interference patterns characterizing the emission at the cavity frequency.

5 Pages, 3 Figures + Supplemental Material 3 Pages, 3 Figures

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• Measurement-Induced Collective Vibrational Quantum Coherence under Spontaneous Raman Scattering in a Liquid
• Einstein-Podolsky-Rosen steering and Bell nonlocality of two macroscopic mechanical oscillators in optomechanical systems
• Second-Order Coherence Across the Brillouin Lasing Threshold
• Optomechanical compensatory cooling mechanism with exceptional points
• Phonon Pumping by Modulating the Ultrastrong Vacuum