Special Issue "Quantum Information Concepts in Open Quantum Systems"

A special issue of Entropy (ISSN 1099-4300). This special issue belongs to the section "Quantum Information".

Deadline for manuscript submissions: 31 January 2022.

Special Issue Editors

Prof. Dr. Bassano Vacchini
E-Mail Website
Guest Editor
1. Dipartimento di Fisica ‘Aldo Pontremoli’, Università degli Studi di Milano, via Celoria 16, 20133 Milan, Italy
2. Istituto Nazionale di Fisica Nucleare, Sezione di Milano, via Celoria 16, 20133 Milan, Italy
Interests: open quantum systems; foundations of quantum mechanics; decoherence
Dr. Andrea Smirne
E-Mail Website
Guest Editor
1. Dipartimento di Fisica ‘Aldo Pontremoli’, Università degli Studi di Milano, via Celoria 16, 20133 Milan, Italy
2. Istituto Nazionale di Fisica Nucleare, Sezione di Milano, via Celoria 16, 20133 Milan, Italy
Interests: open quantum systems; quantum metrology; foundations of quantum mechanics
Dr. Nina Megier
E-Mail Website
Guest Editor
1. Dipartimento di Fisica ‘Aldo Pontremoli’, Università degli Studi di Milano, via Celoria 16, 20133 Milan, Italy
2. Istituto Nazionale di Fisica Nucleare, Sezione di Milano, via Celoria 16, 20133 Milan, Italy
Interests: open quantum systems; quantum information; quantum thermodynamics

Special Issue Information

It has long been recognized that a key feature in determining the behavior of a quantum system is the interaction with the other surrounding quantum degrees of freedom. This aspect is crucial in foundational studies of quantum mechanics aiming at the description of the quantum measurement process. At the same time, it plays a decisive role in the exploitation of quantum effects, especially in view of the implementation of quantum information schemes, quantum thermodynamic devices, and quantum technology applications. The theory of open quantum systems addresses all these challenges. Recent developments in the field have, however, shifted the activity toward considering and understanding the relevance of correlations, both of classical and quantum nature, in the description of the dynamics and measurement of open quantum systems. Indeed, duly keeping correlations into account both at the initial time and in the course of the evolution is a crucial requirement to pave the way for experimental advancements in the field of open quantum systems.

Prof. Dr. Bassano Vacchini
Dr. Andrea Smirne
Dr. Nina Megier
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Entropy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • quantum correlations in OQS
  • information flow in OQS
  • non-Markovianity
  • initial correlations
  • quantum measurement
  • quantum incompatibility
  • entropic inequalities in OQS
  • quantum coherence in OQS

Published Papers (3 papers)

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Research

Article
Engineering Classical Capacity of Generalized Pauli Channels with Admissible Memory Kernels
Entropy 2021, 23(11), 1382; https://0-doi-org.brum.beds.ac.uk/10.3390/e23111382 - 21 Oct 2021
Viewed by 338
Abstract
In this paper, we analyze the classical capacity of the generalized Pauli channels generated via memory kernel master equations. For suitable engineering of the kernel parameters, evolution with non-local noise effects can produce dynamical maps with a higher capacity than a purely Markovian [...] Read more.
In this paper, we analyze the classical capacity of the generalized Pauli channels generated via memory kernel master equations. For suitable engineering of the kernel parameters, evolution with non-local noise effects can produce dynamical maps with a higher capacity than a purely Markovian evolution. We provide instructive examples for qubit and qutrit evolution. Interestingly, similar behavior is not observed when analyzing time-local master equations. Full article
(This article belongs to the Special Issue Quantum Information Concepts in Open Quantum Systems)
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Article
Thermodynamics of Reduced State of the Field
Entropy 2021, 23(9), 1198; https://0-doi-org.brum.beds.ac.uk/10.3390/e23091198 - 11 Sep 2021
Viewed by 593
Abstract
Recent years have seen the flourishing of research devoted to quantum effects on mesoscopic and macroscopic scales. In this context, in Entropy 2019, 21, 705, a formalism aiming at describing macroscopic quantum fields, dubbed Reduced State of the Field (RSF), [...] Read more.
Recent years have seen the flourishing of research devoted to quantum effects on mesoscopic and macroscopic scales. In this context, in Entropy 2019, 21, 705, a formalism aiming at describing macroscopic quantum fields, dubbed Reduced State of the Field (RSF), was envisaged. While, in the original work, a proper notion of entropy for macroscopic fields, together with their dynamical equations, was derived, here, we expand thermodynamic analysis of the RSF, discussing the notion of heat, solving dynamical equations in various regimes of interest, and showing the thermodynamic implications of these solutions. Full article
(This article belongs to the Special Issue Quantum Information Concepts in Open Quantum Systems)
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Article
Quantum Speed Limit and Divisibility of the Dynamical Map
Entropy 2021, 23(3), 331; https://0-doi-org.brum.beds.ac.uk/10.3390/e23030331 - 11 Mar 2021
Cited by 3 | Viewed by 672
Abstract
The quantum speed limit (QSL) is the theoretical lower limit of the time for a quantum system to evolve from a given state to another one. Interestingly, it has been shown that non-Markovianity can be used to speed-up the dynamics and to lower [...] Read more.
The quantum speed limit (QSL) is the theoretical lower limit of the time for a quantum system to evolve from a given state to another one. Interestingly, it has been shown that non-Markovianity can be used to speed-up the dynamics and to lower the QSL time, although this behaviour is not universal. In this paper, we further carry on the investigation on the connection between QSL and non-Markovianity by looking at the effects of P- and CP-divisibility of the dynamical map to the quantum speed limit. We show that the speed-up can also be observed under P- and CP-divisible dynamics, and that the speed-up is not necessarily tied to the transition from P-divisible to non-P-divisible dynamics. Full article
(This article belongs to the Special Issue Quantum Information Concepts in Open Quantum Systems)
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