Stephen Wiesner

Stephen J. Wiesner (1942 – August 12, 2021) was an American-Israeli research physicist, inventor and construction laborer. He discovered many important ideas in quantum information theory, including quantum money (which led to quantum key distribution), quantum multiplexing (the earliest example of oblivious transfer) and superdense coding. He worked at Tel Aviv University.
Wiesner died on August 12, 2021 in Jerusalem.