Media type: E-Article Title: Tight bounds on the concurrence of quantum superpositions Contributor: Niset, J.; Cerf, N. J. imprint: American Physical Society (APS), 2007 Published in: Physical Review A Language: English DOI: 10.1103/physreva.76.042328 ISSN: 1050-2947; 1094-1622 Keywords: Atomic and Molecular Physics, and Optics Origination: Footnote: