In information theory, Zeilinger's principle states that any elementary system carries just one bit of information. This principle was put forward by Austrian physicist Anton Zeilinger in 1999 and subsequently developed by him to derive several aspects of quantum mechanics. Some have reasoned that this principle, in certain ways, links thermodynamics with information theory. [1]

References
1. Daintith, John. (2005). Oxford Dictionary of Science (5th ed.). Oxford: Oxford University Press.