2011/08/11 by Aditi Sen, Aditi Sen De, Ujjwal Sen · 10 citations
Computer Science · Mathematics · Physics and Astronomy · #Computer science #Mathematics #Monotonic function #Physics #Property (philosophy) #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum capacity #Quantum correlation #Quantum discord #Quantum entanglement #Quantum information #Quantum mechanics #Quantum network #Quantum state #Statistical physics #quant-ph
paper · pdf · doi:10.1103/physreva.85.052103
published in Physical Review A 85(5) (American Physical Society) · 6 pages, RevTeX4
arxiv created 2011/08/11 · openalex publication_date 2012/05/04 · arxiv updated 2013/03/06 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We find that locally accessible information of multiparty quantum ensembles have properties akin to quantum as well as classical correlations of single multiparty quantum states. It satisfies monotonicity under local quantum operations and classical communication. However, we show that it does not follow monogamy, an important property usually satisfied by quantum correlations, and actually violates any such relation to the maximal extent. We find an operational sufficient criterion for violation of monogamy. Violation is obtained even for locally indistinguishable, but globally orthogonal, multisite ensembles. The results assert that while single multiparty quantum states are monogamous with respect to their shared quantum correlations, ensembles of multiparty quantum states may not be so.