Ryszard Horodecki

Ryszard Horodecki (born 30 September 1943) is a Polish physicist and a professor of University of Gdańsk. He contributed largely to the field of quantum informatics. In his most widely cited paper, 'Separability of Mixed States: Necessary and Sufficient Conditions' written together with his sons, Michał and Paweł, he proposed the idea currently known as the Peres–Horodecki criterion. With over 12,000 citations, he is considered to be one of the leading Polish physicists. Provided by Wikipedia