Information-disturbance tradeoff for spin coherent state estimation

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

References in corpus (2)

• Decoherence-full subsystems and the cryptographic power of a private shared reference frame
• Information-Disturbance Tradeoff in Quantum State Discrimination

Cited by in corpus (2)

• Global information balance in quantum measurements
• A minimum-disturbing quantum state discriminator