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Abstract: I consider the tradeoff 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 quantum measurements, and all post-measurement dynamics compatible with a given measurement. For the uniform initial distribution over... (Update)
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BibTeX entry: (Update)
@techreport{ barnum00informationdisturbance,
author = "H. Barnum",
title = "Information-disturbance tradeoff in quantum measurement on the uniform ensemble",
number = "CSTR-00-013",
year = "2000",
url = "citeseer.ist.psu.edu/barnum00informationdisturbance.html" }
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[Article contains additional citations not shown here]
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