Construction of extremal local positive-operator-valued measures under symmetry
نویسندگان
چکیده
منابع مشابه
Extremal Covariant Positive Operator Valued Measures: the Case of a Compact Symmetry Group
In the modern theory of quantum mechanics, observables are represented as normalized positive operator valued measures (POVMs). The set of all POVMs having the same outcome space has natural convex structure. A convex mixture of two POVMs corresponds to a random choice between two measurement apparatuses. An extremal POVM thus describes an observable which is unaffected by this kind of randomne...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2003
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.67.062308