Optimal estimation of a physical observable’s expectation value for pure states
نویسندگان
چکیده
منابع مشابه
Optimal Quantum Measurements of Expectation Values of Observables
Experimental characterizations of a quantum system involve the measurement of expectation values of observables for a preparable state |ψ〉 of the quantum system. Such expectation values can be measured by repeatedly preparing |ψ〉 and coupling the system to an apparatus. For this method, the precision of the measured value scales as 1 √ N for N repetitions of the experiment. For the problem of e...
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Markus P. Müller,1, 2, ∗ David Gross,3, † and Jens Eisert2, 4, ‡ 1Institute of Mathematics, Technical University of Berlin, 10623 Berlin, Germany 2Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany 3Institute for Theoretical Physics, Leibniz University Hannover, 30167 Hannover, Germany 4Institute for Advanced Study Berlin, 14193 Berlin, Germany (Dated: October 22,...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2006
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.73.062322