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Measure of the non-Gaussian character of a quantum state

✍ Scribed by Genoni, Marco G.; Paris, Matteo G. A.; Banaszek, Konrad


Book ID
121190895
Publisher
The American Physical Society
Year
2007
Tongue
English
Weight
202 KB
Volume
76
Category
Article
ISSN
1050-2947

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A useful measure of quantum state impuri
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We employ M= [ (Trp)'-Tr$]/(Trp)\* as a quantitative measure of state impurity, i.e. the deviation ofa time-dependent quantum state described by density matrix p, from a pure state. Two examples, an optically prepared molecular state and a quantum kicked rotor subjected to Gaussian amplitude noise a