Discrimination between pure states and mixed states
نویسندگان
چکیده
منابع مشابه
Unitary evolution between pure and mixed states.
We propose an extended quantum mechanical formalism that is based on a wave operator ˆ̺, which is related to the ordinary density matrix via ρ = ˆ̺ˆ̺†. This formalism allows a (generalized) unitary evolution between pure and mixed states. It also preserves much of the connection between symmetries and conservation laws. The new formalism is illustrated for the case of a two level system. e-mail: r...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2007
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.75.062306