We propose an experimentally accessible, objective measure for the macroscopicity of superposition states in mechanical quantum systems. Based on the observable consequences of a minimal, macrorealist extension of quantum mechanics, it allows one to quantify the degree of macroscopicity achieved in different experiments.
@article{arxiv.1205.3447,
title = {Macroscopicity of Mechanical Quantum Superposition States},
author = {Stefan Nimmrichter and Klaus Hornberger},
journal= {arXiv preprint arXiv:1205.3447},
year = {2013}
}
Comments
11 pages, 2 figures. v2: Corresponds to the published version, except for a different numbering of the references. The published "Supplemental Material" is included as an appendix