Discriminating the effects of collapse models from environmental diffusion with levitated nanospheres

Abstract

Collapse models postulate the existence of intrinsic noise which modifies quantum mechanics and is responsible for the emergence of macroscopic classicality. Assessing the validity of these models is extremely challenging because it is nontrivial to discriminate unambiguously their presence in experiments where other hardly controllable sources of noise compete to the overall decoherence. Here we provide a simple procedure able to probe the hypothetical presence of the collapse noise with a levitated nanosphere in a Fabry-Perot cavity. We show that the stationary state of the system is particularly sensitive, under specific experimental conditions, to the interplay between the trapping frequency, the cavity size, and the momentum diffusion induced by the collapse models, allowing to detect them even in the presence of standard environmental noises.

close to the published version

References in corpus (14)

• Millikelvin cooling of an optically trapped microsphere in vacuum
• Large Quantum Superpositions and Interference of Massive Nanometer-Sized Objects
• Testing the limits of quantum mechanical superpositions
• Atom-interferometry constraints on dark energy
• Optically Levitating Dielectrics in the Quantum Regime: Theory and Protocols
• Lower and Upper Bounds on CSL Parameters from Latent Image Formation and IGM Heating
• Upper bounds on spontaneous wave-function collapse models using millikelvin-cooled nanocantilevers
• Optomechanical sensing of spontaneous wave-function collapse
• Probing Dark Energy with Atom Interferometry
• Heating of trapped ultracold atoms by collapse dynamics
• Testing spontaneous wave-function collapse models on classical mechanical oscillators
• Master equation approach to optomechanics with arbitrary dielectrics
• X-rays help to unfuzzy the concept of measurement
• Probing wave function collapse models with a classically driven mechanical oscillator

Cited by in corpus (27)

• Entangling two magnon modes via magnetostrictive interaction
• Gravitational Decoherence
• Experimental bounds on collapse models from gravitational wave detectors
• Free Nano-Object Ramsey Interferometry for Large Quantum Superpositions
• Improved noninterferometric test of collapse models using ultracold cantilevers
• Room temperature test of the Continuous Spontaneous Localization model using a levitated micro-oscillator
• 6 GHz hyperfast rotation of an optically levitated nanoparticle in vacuum
• Generation and detection of non-Gaussian phonon-added coherent states in optomechanical systems
• Testing collapse models with levitated nanoparticles: the detection challenge
• Quantum experiments with microscale particles
• Gas-induced friction and diffusion of rigid rotors
• Spatio-Orientational Decoherence of Nanoparticles
• Open quantum dynamics induced by light scalar fields
• Detecting continuous spontaneous localisation with charged bodies in a Paul trap
• Collapse-induced Orientational Localization of Rigid Rotors
• Auxiliary-cavity-assisted ground-state cooling of optically levitated nanosphere in the unresolved-sideband regime
• Macroscopicity of quantum mechanical superposition tests via hypothesis falsification
• Lens-free Optical Detection of Thermal Motion of a Sub-millimeter Sphere Diamagnetically Levitated in High Vacuum
• Probing Spontaneous Wave-Function Collapse with Entangled Levitating Nanospheres
• Quantum-limited estimation of continuous spontaneous localization
• Nanomechanical test of quantum linearity
• Unravelling the noise: the discrimination of wave function collapse models under time-continuous measurements
• Einstein-Podolsky-Rosen steering and Bell nonlocality of two macroscopic mechanical oscillators in optomechanical systems
• Direct measurement of the optical trap-induced decoherence
• Coherent coupling completes an unambiguous optomechanical classification framework
• Can the displacemon device test objective collapse models?
• Full dynamics of two-membrane cavity optomechanics