Non-classicality of optomechanical devices in experimentally realistic operating regimes

Abstract

Enforcing a non-classical behavior in mesoscopic systems is important for the study of the boundaries between quantum and classical world. Recent experiments have shown that optomechanical devices are promising candidates to pursue such investigations. Here we consider two different setups where the indirect coupling between a three-level atom and the movable mirrors of a cavity is achieved. The resulting dynamics is able to conditionally prepare a non-classical state of the mirrors by means of projective measurements operated over a pure state of the atomic system. The non-classical features are persistent against incoherent thermal preparation of the mechanical systems and their dissipative dynamics.

11 pages, 9 Figures

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Cited by in corpus (10)

• Probing macroscopic realism via Ramsey correlations measurements
• Quantum cooling and squeezing of a levitating nanosphere via time-continuous measurements
• Nonlinearity as a resource for nonclassicality in anharmonic systems
• More nonlocality with less entanglement in a tripartite atom-optomechanical system
• Amplification effects in optomechanics via weak measurement
• Steady-State Force Sensing with Single Trapped Ion
• Atom-assisted quadrature squeezing of a mechanical oscillator inside a dispersive cavity
• Squeezing of mechanical motion via qubit-assisted control
• Non-classicality tests and entanglement witnesses for macroscopic mechanical superposition states
• A macrorealistic test in hybrid quantum optomechanics