On the Heisenberg principle, namely on the information-disturbance trade-off in a quantum measurement
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15 صفحه اولUncertainty trade-off and disturbance trade-off for quantum measurements
An important non-classical feature of quantum measurements is the celebrated uncertainty trade-off, namely that the uncertainties in the outcomes of measurements performed on distinct yet identically prepared ensembles of systems cannot all be made arbitrarily small. Recently, we have shown that quantum measurements also exhibit another non-classical feature of disturbance trade-off namely, tha...
متن کاملInformation-disturbance tradeoff in quantum measurement on the uniform ensemble
I consider the tradeo between the information gained about an initially unknown quantum state, and the disturbance caused to that state by the measurement process. I show that for any distribution of initial states, the information-disturbance frontier is convex, and disturbance is nondecreasing with information gain. I consider the most general model of quantummeasurements, and all post-measur...
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ژورنال
عنوان ژورنال: Fortschritte der Physik
سال: 2003
ISSN: 0015-8208,1521-3978
DOI: 10.1002/prop.200310045