Quantum contextuality in systems of identical bosonic particles is explicitly exhibited via the maximum violation of a suitable inequality of Clauser-Horne-Shimony-Holt type. Unlike the approaches considered so far, which make use of single-particle observables, our analysis involves collective observables constructed using multi-boson operators. An exemplifying scheme to test this violation with a quantum optical setup is also discussed.
@article{arxiv.1109.1106,
title = {Quantum contextuality in N-boson systems},
author = {F. Benatti and R. Floreanini and M. Genovese and S. Olivares},
journal= {arXiv preprint arXiv:1109.1106},
year = {2015}
}