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Common Coherence Witnesses and Common Coherent States

We show the properties and characterization of coherence witnesses. We show methods for constructing coherence witnesses for an arbitrary coherent state. We investigate the problem of finding common coherence witnesses for certain class of states. We show that finitely many different witnesses [Form...

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Autores principales: Wang, Bang-Hai, Ding, Zi-Heng, Ma, Zhihao, Fei, Shao-Ming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8471717/
https://www.ncbi.nlm.nih.gov/pubmed/34573764
http://dx.doi.org/10.3390/e23091136
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author Wang, Bang-Hai
Ding, Zi-Heng
Ma, Zhihao
Fei, Shao-Ming
author_facet Wang, Bang-Hai
Ding, Zi-Heng
Ma, Zhihao
Fei, Shao-Ming
author_sort Wang, Bang-Hai
collection PubMed
description We show the properties and characterization of coherence witnesses. We show methods for constructing coherence witnesses for an arbitrary coherent state. We investigate the problem of finding common coherence witnesses for certain class of states. We show that finitely many different witnesses [Formula: see text] can detect some common coherent states if and only if [Formula: see text] is still a witnesses for any nonnegative numbers [Formula: see text]. We show coherent states play the role of high-level witnesses. Thus, the common state problem is changed into the question of when different high-level witnesses (coherent states) can detect the same coherence witnesses. Moreover, we show a coherent state and its robust state have no common coherence witness and give a general way to construct optimal coherence witnesses for any comparable states.
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spelling pubmed-84717172021-09-28 Common Coherence Witnesses and Common Coherent States Wang, Bang-Hai Ding, Zi-Heng Ma, Zhihao Fei, Shao-Ming Entropy (Basel) Brief Report We show the properties and characterization of coherence witnesses. We show methods for constructing coherence witnesses for an arbitrary coherent state. We investigate the problem of finding common coherence witnesses for certain class of states. We show that finitely many different witnesses [Formula: see text] can detect some common coherent states if and only if [Formula: see text] is still a witnesses for any nonnegative numbers [Formula: see text]. We show coherent states play the role of high-level witnesses. Thus, the common state problem is changed into the question of when different high-level witnesses (coherent states) can detect the same coherence witnesses. Moreover, we show a coherent state and its robust state have no common coherence witness and give a general way to construct optimal coherence witnesses for any comparable states. MDPI 2021-08-31 /pmc/articles/PMC8471717/ /pubmed/34573764 http://dx.doi.org/10.3390/e23091136 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 Brief Report
Wang, Bang-Hai
Ding, Zi-Heng
Ma, Zhihao
Fei, Shao-Ming
Common Coherence Witnesses and Common Coherent States
title Common Coherence Witnesses and Common Coherent States
title_full Common Coherence Witnesses and Common Coherent States
title_fullStr Common Coherence Witnesses and Common Coherent States
title_full_unstemmed Common Coherence Witnesses and Common Coherent States
title_short Common Coherence Witnesses and Common Coherent States
title_sort common coherence witnesses and common coherent states
topic Brief Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8471717/
https://www.ncbi.nlm.nih.gov/pubmed/34573764
http://dx.doi.org/10.3390/e23091136
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