Quantum-classical hypothesis tests in macroscopic matter-wave interferometry
arXiv:2004.03392 · doi:10.1103/PhysRevResearch.2.033034
Abstract
We assess the most macroscopic matter-wave experiments to date as to the extent to which they probe the quantum-classical boundary by demonstrating interference of heavy molecules and cold atomic ensembles. To this end, we consider a rigorous Bayesian test protocol for a parametrized set of hypothetical modifications of quantum theory, including well-studied spontaneous collapse models, that destroy superpositions and reinstate macrorealism. The range of modification parameters ruled out by the measurement events quantifies the macroscopicity of a quantum experiment, while the shape of the posterior distribution resulting from the Bayesian update reveals how conclusive the data are at testing macrorealism. This protocol may serve as a guide for the design of future matter-wave experiments ever closer to truly macroscopic scales.
13 pages, 9 figures
References in corpus (31)
- Decoherence, einselection, and the quantum origins of the classical
- Models of Wave-function Collapse, Underlying Theories, and Experimental Tests
- Many-particle entanglement with Bose--Einstein condensates
- Quantum spin squeezing
- Remote quantum entanglement between two micromechanical oscillators
- Entanglement and Extreme Spin Squeezing
- Gravitation and quantummechanical localization of macroobjects
- Colloquium: Quantum interference of clusters and molecules
- Space-borne Bose-Einstein condensation for precision interferometry
- Matter-wave interference with particles selected from a molecular library with masses exceeding 10000 amu
- Integrated Mach-Zehnder interferometer for Bose-Einstein condensates
- Phase shift in atom interferometry due to spacetime curvature
- Macroscopic quantum states: measures, fragility and implementations
- Macroscopicity of Mechanical Quantum Superposition States
- Quantum Tests of the Einstein Equivalence Principle with the STE-QUEST Space Mission
- Ideal negative measurements in quantum walks disprove theories based on classical trajectories
- Probing gravity by holding atoms for 20 seconds
- Enhanced atom interferometer readout through the application of phase shear
- Measures of macroscopicity for quantum spin systems
- Macroscopic quantum resonators (MAQRO): 2015 Update
- Objective Priors: An Introduction for Frequentists
- Testing spontaneous localization theories with matter-wave interferometry
- Heating of trapped ultracold atoms by collapse dynamics
- Theory and experimental verification of Kapitza-Dirac-Talbot-Lau interferometry
- Continuous Quantum Hypothesis Testing
- Macroscopicity of quantum mechanical superposition tests via hypothesis falsification
- Dynamical model selection near the quantum-classical boundary
- Talbot--Lau effect beyond the point-particle approximation
- Testing quantum mechanics: a statistical approach
- Verifying quantum superpositions at metre scales
- Sensing spontaneous collapse and decoherence with interfering Bose-Einstein condensates
Cited by in corpus (15)
- Present status and future challenges of non-interferometric tests of collapse models
- Macroscopic quantum test with bulk acoustic wave resonators
- Quantum experiments with microscale particles
- Physically significant phase shifts in matter-wave interferometry
- An Optomechanical Platform for Quantum Hypothesis Testing for Collapse Models
- Testing collapse models with Bose-Einstein-Condensate interferometry
- Particle mixing and the emergence of classicality: A spontaneous-collapse-model view
- Optomechanics-based quantum estimation theory for collapse models
- On the role of symmetry and geometry in global quantum sensing
- Bayesian inference for near-field interferometric tests of collapse models
- Observability of spontaneous collapse in flavor oscillations and its relation to the CP and CPT symmetries
- Quantum master equations for a fast particle in a gas
- Transverse quantum decoherence of a fast particle in a gas
- Experimental decoherence in molecule interferometry
- Certifying Macroscopic Quantum Mechanics via Hypothesis Testing with Finite Data