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Noncommuting observables in quantum detection and estimation theoryIn quantum detection theory, the optimum detection operators must commute; admitting simultaneous approximate measurement of noncommuting observables cannot yield a lower Bayes cost. In addition, the lower bounds on mean square errors of parameter estimates, predicted by the quantum mechanical Cramer-Rao inequality, cannot be reduced by such means.
Document ID
19720005959
Acquisition Source
Legacy CDMS
Document Type
Preprint (Draft being sent to journal)
Authors
Helstrom, C. W. (California Univ. San Diego, CA, United States)
Date Acquired
September 2, 2013
Publication Date
January 1, 1971
Subject Category
Physics, General
Report/Patent Number
NASA-CR-122314
Accession Number
72N13608
Funding Number(s)
CONTRACT_GRANT: NGL-05-009-079
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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