Quantum Information Entropy in Physics
A special issue of Entropy (ISSN 1099-4300). This special issue belongs to the section "Quantum Information".
Deadline for manuscript submissions: closed (28 February 2023) | Viewed by 5212
Special Issue Editor
Special Issue Information
Dear Colleagues,
Shannon’s quantification of the concept of “information” was an essential step towards its understanding, whilst also attempting to provide an answer to the following question: what is the best way of encoding a message to be transmitted? For that, he introduced the quantity known as “information entropy”, usually denoted as H. Interestingly, H, which plays a key role in the information theory, bears an analogy with entropy in statistical mechanics, having the same functional form. Following this path, Jaynes established a connection between these two quantities, bringing together the worlds of information theory and thermodynamics. Subsequently, the works of Gordon, Helstrom, Stratonovich and Holevo considered the possibility of encoding information in quantum states; thus, creating the “quantum information theory”. It became clear that entropy is also an essential concept in the quantum domain, with the entropy introduced by von Neumann being the quantum analogue of H. Additionally, Umegaki proposed a quantum generalization of the Kullback–Leibler relative entropy, known as the quantum relative entropy, from which one can derive other forms of quantum entropies. In general, quantum information entropy has become an important tool to quantify characteristic quantum properties, e.g., quantum correlations, quantum coherence as well as the non-Gaussianity of quantum states. This has been accompanied by substantial progress in the fields of quantum information processing, quantum communications and quantum sensing, the backbones of quantum technologies.
In this Special Issue, we wish to accept unpublished contributions, either original or reviews, related to the theme of quantum information entropy in physics. This is a broad topic ranging from application-oriented subjects such as quantum communications and quantum computing to developments in fundamental physics, quantum thermodynamics, quantum information in many-body systems, etc.
Prof. Dr. Antonio Vidiella-Barrranco
Guest Editor
Manuscript Submission Information
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Keywords
- quantum entropy
- quantum information processing
- quantum entanglement
- quantum coherence
- quantum computing
- quantum key distribution
- quantum thermodynamics
- quantum optics
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