Rolf Landauer

Rolf William Landauer (1927–1999) was an IBM physicist who in 1961 argued that when information is lost in an irreversible circuit, the information becomes entropy and an associated amount of energy is dissipated as heat. This principle is relevant to reversible computing, quantum information and quantum computing. Landauer was born on February 4, 1927, in Stuttgart, Germany. He emigrated to the United States in 1938 to escape Nazi persecution of... more

Rolf William Landauer (1927–1999) was an IBM physicist who in 1961 argued that when information is lost in an irreversible circuit, the information becomes entropy and an associated amount of energy is dissipated as heat. This principle is relevant to reversible computing, quantum information and quantum computing. Landauer was born on February 4, 1927, in Stuttgart, Germany. He emigrated to the United States in 1938 to escape Nazi persecution of Jews, graduated in 1943 from Stuyvesant High School, one of New York City's mathematics and science magnet schools, and obtained his undergraduate degree from Harvard in 1945. Following service in the US Navy as an electrician's mate, he earned his Ph.D. from Harvard in 1950. He first worked for two years at NASA, then known as the National Advisory Committee for Aeronautics, and at the age of 25 began a career in semiconductors at IBM. As part of the two-man team responsible for managing IBM's Research Division in the mid-1960s, he was... less