Information-disturbance tradeoff for spin coherent state estimation

Details Information-disturbance tradeoff for spin coherent state estimation Information-disturbance tradeoff for spin coherent state estimation

2006-10-30

arxiv.org/abs/quant-ph/0610246v2

Phys. Rev. A 75, 012306 (2007)

Physics

Quantum Physics

6 pages, 3 figures; improved introduction, simplified notation, and new references. To appear on Phys. Rev. A

Scientific paper

10.1103/PhysRevA.75.012306

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.

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