Symmetry in Quantum Key Distribution and Quantum Communication

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Mathematics".

Deadline for manuscript submissions: closed (31 January 2025) | Viewed by 885

Special Issue Editors


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Guest Editor
CSIC-Instituto de Tecnologías Físicas y de la Información Leonardo Torres Quevedo (ITEFI), Madrid, Spain
Interests: quantum key distribution; quantum communication

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Guest Editor
Instituto de Tecnologías Físicas y de la Información, Consejo Superior de Investigaciones Científicas, 438851 Madrid, Spain
Interests: light-matter interactions for applications in quantum information and metrology

Special Issue Information

Dear Colleagues,

Quantum key distribution (QKD) is a secure communication method based on the principles of quantum mechanics that provides unconditionally secure communication. QKD is a solution to the problem of key distribution in cryptographic systems. The security of QKD is based on the laws of quantum mechanics rather than computational complexity. Device-independent quantum key distribution (DIQKD) is a version of QKD that provides a stronger notion of security. DIQKD can be performed at a speed beyond that of traditional QKD. The quantum communication system, which includes quantum key distribution, plays an important role in secure and high-speed communication. Symmetry plays a fundamental role in the fields of quantum key distribution (QKD) and quantum communication, enabling secure and efficient transmission of information using the principles of quantum mechanics.

This Special Issue intends to present a panorama of current developments in this area.

We look forward to receiving outstanding contributions addressing the following topics:

  • Quantum key distribution;
  • Quantum communications;
  • Quantum network;
  • Cryptographic systems.

Please note that all submitted papers must be within the general scope of the Symmetry journal.

Dr. Veronica Fernandez
Dr. Daniel Cano
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 submissions that pass pre-check are 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. Symmetry 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 2400 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 key distribution
  • quantum communications
  • quantum network
  • cryptographic systems

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Published Papers (1 paper)

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Research

26 pages, 849 KiB  
Article
A Novel Two- and Three-Player Scheme for Quantum Direct Communication
by Theodore Andronikos and Alla Sirokofskich
Symmetry 2025, 17(3), 379; https://doi.org/10.3390/sym17030379 - 2 Mar 2025
Viewed by 400
Abstract
This paper introduces two information-theoretically quantum secure direct communication protocols that accomplish information exchange between Alice and Bob in the first case, and among Alice, Bob, and Charlie in the second case. Both protocols use a novel method, different from existing similar protocols, [...] Read more.
This paper introduces two information-theoretically quantum secure direct communication protocols that accomplish information exchange between Alice and Bob in the first case, and among Alice, Bob, and Charlie in the second case. Both protocols use a novel method, different from existing similar protocols, to embed the secret information in the entangled compound system. This new way of encoding the secret information is one of the main novelties of this paper, and a distinguishing feature compared to previous works in this field. A second critical advantage of our method is its scalability and extensibility because it can be seamlessly generalized to a setting involving three, or more, players, as demonstrated by the second protocol. This trait is extremely beneficial in many real-life situations, where many spatially separated players posses only part the secret information that must be transmitted to Alice, so that she may obtain the complete secret. Using the three-player protocol, this task can be achieved in one go, without the need to apply a typical QSDC protocol twice, where Alice first receives Bob’s and then Charlie’s information. The proposed protocol does not require pre-shared keys or quantum signatures, making it less complicated and more straightforward. Finally, in anticipation of the coming era of distributed quantum computing, our protocols offer the important practical advantage of straightforward implementation on contemporary quantum computers, as they only require standard CNOT and Hadamard gates. Full article
(This article belongs to the Special Issue Symmetry in Quantum Key Distribution and Quantum Communication)
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