Ryszard Horodecki (born 30 September 1943) is a Polish physicist and a professor of University of Gdańsk.
In his most widely cited paper, 'Separability of Mixed States: Necessary and Sufficient Conditions'[2] written together with his sons, Michał and Paweł, he proposed the idea currently known as the Peres-Horodecki criterion.
His contribution to the quantum informatics were acknowledged in 2008, when he received the Prize of the Foundation for Polish Science in the field of mathematics and physics.
[4] Beyond scientific work, Horodecki publishes also poems in several Polish newspapers, particularly in Tygodnik Powszechny.
Horodecki's sons, Michał, Paweł, and Karol are also physicists working in Gdańsk with all of whom he jointly published the review article "Quantum entanglement".