Information-disturbance tradeoff for spin coherent state estimation
arXiv:quant-ph/0610246 · doi:10.1103/PhysRevA.75.012306
Abstract
We show how to quantify the optimal tradeoff between the amount of information retrieved by a quantum measurement in estimating an unknown spin coherent state and the disturbance on the state itself, and how to derive the corresponding minimum-disturbing measurement.
6 pages, 3 figures; improved introduction, simplified notation, and new references. To appear on Phys. Rev. A
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