Local Measurement-Induced Minimal Decoherence and its variants

Jing-Min Zhu

Physica A: Statistical Mechanics and its Applications, 2021, vol. 584, issue C

Abstract: Based on quantum measurement, the existing quantum correlation (QC) measures are divided into two categories, one class based on minimal entropy-like difference of the measurement fore-and-aft system density matrix, and the other based on minimal trace-like geometric distance of the measurement fore-and-aft system density matrix. Here we provide another class of QC measure, Local Measurement-Induced Minimal Decoherence (LMIMD) which indicates the simple and clear relationship between QC and quantum coherence. Its physical picture is intuitive and clear. These also indicate that the design realization of its experiment detection and specific potential applications with the superiorities would be much easier. In terms of some typical quantum systems, we investigate and analyze the advantages and disadvantages of the LMIMD and its variants Local Eigen-Measurement-Induced Minimal Decoherence (LEMIMD) and Local Eigen-Measurement-Induced Decoherence (LEMID) compared with the existing two classes of QC measure.

Keywords: Quantum correlation (QC); Local Measurement-Induced Minimal Decoherence (LMIMD); Local Eigen-Measurement-Induced Minimal Decoherence (LEMIMD); Local Eigen-Measurement-Induced Decoherence (LEMID) (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:584:y:2021:i:c:s0378437121006300

DOI: 10.1016/j.physa.2021.126357

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