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Journal Article

Macroscopicity of quantum mechanical superposition tests via hypothesis falsification

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Nimmrichter,  Stefan
Marquardt Division, Max Planck Institute for the Science of Light, Max Planck Society;

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PhysRevA.100.032111.pdf
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2019_Nimmrichter_Macroscopicity.png
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Citation

Schrinski, B., Nimmrichter, S., Stickler, B. A., & Hornberger, K. (2019). Macroscopicity of quantum mechanical superposition tests via hypothesis falsification. Physical Review A, 100(3): 032111. doi:10.1103/PhysRevA.100.032111.


Cite as: https://hdl.handle.net/21.11116/0000-0003-D8DE-0
Abstract
We establish an objective scheme to determine the macroscopicity of quantum mechanical super-position tests, which is based on the Bayesian hypothesis falsification of macrorealistic modificationsof quantum theory. The measure uses the raw data gathered in an experiment, taking into accountall measurement uncertainties, and can be used to directly assess any conceivable quantum test.We determine the resulting macroscopicity for three recent tests of quantum physics: double-wellinterference of Bose-Einstein condensates, Leggett-Garg tests with atomic random walks, and en-tanglement generation and read-out of nanomechanical oscillators.