Physical Review APublisher’s Note: Unitary quantum gates, perfect entanglers, and unistochastic maps [Phys. Rev. A87, 022111 (2013)]Marcin Musz, Marek Kuś, Karol ŻyczkowskiPublished Feb 21, 2013• 1 citationPublisherAbstractReceived 19 February 2013DOI:https://doi.org/10.1103/PhysRevA.87.029904©2013 American Physical SocietyDOI10.1103/physreva.87.029904