Leggett-Garg tests of macro-realism for multi-particle systems including double-well Bose-Einstein condensates
arXiv:1612.05726 · doi:10.1103/PhysRevA.97.042114
Abstract
We construct quantifiable generalisations of Leggett-Garg tests for macro/ mesoscopic realism and noninvasive measurability that apply when not all outcomes of measurement can be identified as arising from one of two macroscopically distinguishable states. We show how quantum mechanics predicts a negation of the LG premises for proposals involving ideal-negative-result, weak and quantum non-demolition measurements on dynamical entangled systems, as might be realised with two-well Bose-Einstein condensates, path-entangled NOON states and atom interferometers.
5 pages 4 figures, presented at 2016 Heraeus Seminar on Macroscopic Entanglement and 2016 Siegen Workshop on Temporal Quantum Correlations and Steering
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