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Quantifying Decoherence via Increases in Classicality
Fu, Shuangshuang1; Luo, Shunlong2,3
Source PublicationENTROPY
AbstractAs a direct consequence of the interplay between the superposition principle of quantum mechanics and the dynamics of open systems, decoherence is a recurring theme in both foundational and experimental exploration of the quantum realm. Decoherence is intimately related to information leakage of open systems and is usually formulated in the setup of "system + environment" as information acquisition of the environment (observer) from the system. As such, it has been mainly characterized via correlations (e.g., quantum mutual information, discord, and entanglement). Decoherence combined with redundant proliferation of the system information to multiple fragments of environment yields the scenario of quantum Darwinism, which is now a widely recognized framework for addressing the quantum-to-classical transition: the emergence of the apparent classical reality from the enigmatic quantum substrate. Despite the half-century development of the notion of decoherence, there are still many aspects awaiting investigations. In this work, we introduce two quantifiers of classicality via the Jordan product and uncertainty, respectively, and then employ them to quantify decoherence from an information-theoretic perspective. As a comparison, we also study the influence of the system on the environment.
Keyworddecoherence classicality channel open system interference
Indexed BySCI
Funding ProjectNational Key R&D Program of China[2020YFA0712700] ; Fundamental Research Funds for the Central Universities[FRF-TP-19-012A3] ; National Natural Science Foundation of China[11875317] ; National Natural Science Foundation of China[61833010]
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000737171700001
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Document Type期刊论文
Corresponding AuthorLuo, Shunlong
Affiliation1.Univ Sci & Technol, Sch Math & Phys, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Sch Math Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Fu, Shuangshuang,Luo, Shunlong. Quantifying Decoherence via Increases in Classicality[J]. ENTROPY,2021,23(12):21.
APA Fu, Shuangshuang,&Luo, Shunlong.(2021).Quantifying Decoherence via Increases in Classicality.ENTROPY,23(12),21.
MLA Fu, Shuangshuang,et al."Quantifying Decoherence via Increases in Classicality".ENTROPY 23.12(2021):21.
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