出典:Wikipedia
出典:『Wikipedia』 (2010/05/19 16:52 UTC 版)
In quantum mechanics, a quantum process is a somewhat ambiguous term which usually refers to the time evolution of an (open) quantum system. Under very general assumptions, a quantum process is described by the quantum operation formalism (also known as a quantum dynamical map), which is a linear, completely positive map from the set of density matrices to itself.