Information-Disturbance Tradeoff in Estimating a Maximally Entangled State

2006/05/18 by Massimiliano F. Sacchi · 3 citations
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #quant-ph

paper · pdf · doi:10.1103/physrevlett.96.220502

published as Phys. Rev. Lett. 96, 220502 (2006) · 4 pages. Accepted for publication on Physical Review Letters

arxiv created 2006/05/18 · openalex publication_date 2006/06/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We derive the amount of information retrieved by a quantum measurement in estimating an unknown maximally entangled state, along with the pertaining disturbance on the state itself. The optimal tradeoff between information and disturbance is obtained, and a corresponding optimal measurement is provided.

Citations

• Information Tradeoff Relations for Finite-Strength Quantum Measurements
• Covariant quantum measurements that maximize the likelihood
• Optimal minimal measurements of mixed states
• Quantum State Disturbance vs. Information Gain: Uncertainty Relations for Quantum Information
• �ber den anschaulichen Inhalt der quantentheoretischen Kinematik und Mechanik

Cited by

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• Improving information/disturbance and estimation/distortion trade-offs with non-universal protocols
• Optimal multicopy asymmetric Gaussian cloning of coherent states