Quantum Correlations in Mixed-State Metrology

2010/03/31 by Kavan Modi, Hugo Cable, Mark Williamson +1 · 4 citations
Chemistry · Computer Science · Medicine · Physics and Astronomy · #Advanced MRI Techniques and Applications #Advanced NMR Techniques and Applications #Limit (mathematics) #Metrology #Noise (video) #Quantum #Quantum Computing Algorithms and Architecture #Quantum fluctuation #Quantum limit #Quantum metrology #Quantum noise #Quantum sensor #quant-ph

paper · pdf · doi:10.1103/physrevx.1.021022

published as Phys. Rev. X 1, 021022 (2011) · 10 pages, 6 figures

openalex publication_date 2011/12/27 · arxiv created 2011/12/30 · arxiv updated 2012/01/04 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

When a quantum system is exposed to classical external noise, does the noise make it more difficult for precisions higher than the standard quantum limit to be achieved in measurements of the system's physical quantities? Researchers from Singapore and U.K. theoretically demonstrate the opposite with a set of quantum-measurement strategies that incorporate quantum discord.

Citations

• Classical, quantum and total correlations

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