Quantum sensing with milligram scale optomechanical systems

Abstract

Probing the boundary between classical and quantum mechanics has been one of the central themes in modern physics. Recently, experiments to precisely measure the force acting on milligram scale oscillators with optical cavities are attracting interest as promising tools to test quantum mechanics, decoherence mechanisms, and gravitational physics. In this paper, we review the present status of experiments using milligram scale optomechanical systems. We compare the feasibility of reaching the quantum regime with a pendulum, torsion pendulum, and optically levitated mirror. Considerations for designing a high $Q$ pendulum, condition for torsion pendulums to have better force sensitivity than pendulums, and constraints in designing optical levitation of a mirror are presented.

14 pages, 6 figures

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Cited by in corpus (13)

• Gravity-induced entanglement in optomechanical systems
• Quantum sensing with milligram scale optomechanical systems
• Testing the quantum nature of gravity without entanglement
• Lens-free Optical Detection of Thermal Motion of a Sub-millimeter Sphere Diamagnetically Levitated in High Vacuum
• Observation of Nonlinear Dynamics in an Optical Levitation System
• Enhancement of quantum gravity signal in an optomechanical experiment
• Angular trapping of a linear-cavity mirror with an optical torsional spring
• Effective description of a suspended mirror coupled to cavity light -Limitations of Q-enhancement due to normal mode splitting by an optical spring-
• Optical trapping of the transversal motion for an optically levitated mirror
• Cancellation of photothermally induced instability in an optical resonator
• Theoretical Study of the Squeezed-Light-Enhanced Sensitivity to Gravity-Induced Entanglement via Finite-Time Analysis
• Violation of the two-time Leggett-Garg inequalities for a harmonic oscillator
• Modeling Photothermal Effects in High Power Optical Resonators used for Coherent Levitation