Timeline of quantum computing and communication
Open-knowledge reference entry

This is a timeline of quantum computing and communication.
1930s
1936
Erwin Schrödinger publishes a theorem setting the basis for quantum steering and the limits of quantum state purification. The theorem remained uncredited even after multiple expansions and rediscoveries.
1960s
1968/69/70
Stephen Wiesner invents conjugate coding.
1969
13 June – James L. Park (Washington State University, Pullman)'s paper is received by Foundations of Physics, in which he describes the non-possibility of disturbance in a quantum transition state in the context of a disproof of quantum jumps in the Bohr model of the atom.
1970s
1973
Alexander Holevo's paper is published. The Holevo bound describes a limit of the quantity of classical information which is possible to quanta encode.
Charles H. Bennett shows that computation can be done reversibly.
1975
R. P. Poplavskii publishes "Thermodynamical models of information processing" (in Russian) which shows the computational infeasibility of simulating quantum systems on classical computers, due to the superposition principle.
Roman Stanisław Ingarden, a Polish mathematical physicist, submits the paper "Quantum Information Theory" in Reports on Mathematical Physics, vol.
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