Media type: E-Article Title: Quantifying the quantumness of ensembles via unitary similarity invariant norms Contributor: Qi, Xian-Fei; Gao, Ting; Yan, Feng-Li Published: Springer Science and Business Media LLC, 2018 Published in: Frontiers of Physics, 13 (2018) 4 Language: English DOI: 10.1007/s11467-018-0773-3 ISSN: 2095-0462; 2095-0470 Origination: Footnote: