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Quantifying Decoherence via Increases in Classicality
As 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 ope...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8700208/ https://www.ncbi.nlm.nih.gov/pubmed/34945900 http://dx.doi.org/10.3390/e23121594 |
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author | Fu, Shuangshuang Luo, Shunlong |
author_facet | Fu, Shuangshuang Luo, Shunlong |
author_sort | Fu, Shuangshuang |
collection | PubMed |
description | As 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. |
format | Online Article Text |
id | pubmed-8700208 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-87002082021-12-24 Quantifying Decoherence via Increases in Classicality Fu, Shuangshuang Luo, Shunlong Entropy (Basel) Article As 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. MDPI 2021-11-28 /pmc/articles/PMC8700208/ /pubmed/34945900 http://dx.doi.org/10.3390/e23121594 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Fu, Shuangshuang Luo, Shunlong Quantifying Decoherence via Increases in Classicality |
title | Quantifying Decoherence via Increases in Classicality |
title_full | Quantifying Decoherence via Increases in Classicality |
title_fullStr | Quantifying Decoherence via Increases in Classicality |
title_full_unstemmed | Quantifying Decoherence via Increases in Classicality |
title_short | Quantifying Decoherence via Increases in Classicality |
title_sort | quantifying decoherence via increases in classicality |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8700208/ https://www.ncbi.nlm.nih.gov/pubmed/34945900 http://dx.doi.org/10.3390/e23121594 |
work_keys_str_mv | AT fushuangshuang quantifyingdecoherenceviaincreasesinclassicality AT luoshunlong quantifyingdecoherenceviaincreasesinclassicality |