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Quantum Information Processing
Published in: Quantum Information Processing 3/2024

01-03-2024

Quantifying correlations relative to channels via metric-adjusted skew information

Authors: Ruonan Ren, Yu Luo, Yongming Li

Published in: Quantum Information Processing | Issue 3/2024

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Abstract

Quantum coherence and quantum correlations are important components of quantum information theory, which play important roles in quantum information processing. In this paper, we quantify correlations from coherence. The correlations relative to channels via metric-adjusted skew information are put forward. The corresponding results are suitable for special channels, such as positive operator-valued measurements (POVMs), projection measurements and von Neumann measurements. In addition, we discuss the dynamics of quantum correlations in the Bell-diagonal state relative to some classical channels via metric-adjusted skew information. The typical two are the Werner state and the isotropic state. We find that some separable states in entanglement resources theory possess correlations. It also shows quantum channels will disturb quantum states and have a great influence on the correlations. The correlations relative to different channels via different versions of metric-adjusted skew information have their advantages. This has inspired one to study the problem of the existence and action of various quantum correlations in quantum theory to be easily applied to experiments.
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Appendix
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Metadata
Title
Quantifying correlations relative to channels via metric-adjusted skew information
Authors
Ruonan Ren
Yu Luo
Yongming Li
Publication date
01-03-2024
Publisher
Springer US
Published in
Quantum Information Processing / Issue 3/2024
Print ISSN: 1570-0755
Electronic ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-024-04300-5

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