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Quantum Communication and Applications

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Quantum Science and Technology".

Deadline for manuscript submissions: 30 April 2025 | Viewed by 645

Special Issue Editors


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Guest Editor
LASIGE, Departamento de Informática da Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
Interests: quantum computation; computational complexity; cryptography; kolmogorov complexity
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
SQIG – Instituto de Telecomunicações, Instituto Superior Técnico, Universidade Técnica de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
Interests: macroscopic distinguishability; phase transitions and the emergence of classicality from quantum physics; entanglement and indistinguishability; entanglement in many-body systems; quantum walks; quantum communication protocols; the concept of indistinguishability in quantum mechanics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Since the introduction of the BB84 quantum key distribution protocol, which surpasses the security challenges of classical key agreement protocols, quantum communication has become a focal point of research in this field.

Quantum communication is a leading emerging technology, with new applications continually appearing, including the imminent reality of the quantum internet. To capitalize on this new reality, new quantum communication applications are being increasingly developed, with security and privacy being crucial requirements in many different applications.

While secure communication is the primary focus of quantum cryptography, other unresolved problems are gaining attention, such as secure multiparty computations, authentication, blind computation, secret sharing, and even secure quantum machine learning and quantum secure software development. The range of novel applications is vast and diverse, making any attempt at a comprehensive list at risk of needing to be completed.

Therefore, in this Special Issue, we welcome theoretical, computational, and experimental studies and papers on new developments and applications of quantum communications and quantum software development.

Dr. André Nuno Carvalho Souto
Dr. Nikola Paunkovic
Guest Editors

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Keywords

  • quantum communication protocols
  • applications for secure quantum communications and software
  • key distribution/arrangement schemes
  • authentication schemes
  • quantum secure machine learning algorithms/techniques
  • quantum cryptographic applications
  • quantum software
  • semi-quantum communication applications

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Published Papers (1 paper)

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Research

12 pages, 276 KiB  
Article
Quantum Private Comparison Based on Four-Particle Cluster State
by Min Hou and Yue Wu
Appl. Sci. 2024, 14(22), 10759; https://doi.org/10.3390/app142210759 - 20 Nov 2024
Viewed by 307
Abstract
A quantum private comparison (QPC) protocol enables two parties to securely compare their private data without disclosing the actual values to one another, utilizing quantum mechanics to maintain confidentiality. Many current QPC protocols mainly concentrate on comparing the equality of private information between [...] Read more.
A quantum private comparison (QPC) protocol enables two parties to securely compare their private data without disclosing the actual values to one another, utilizing quantum mechanics to maintain confidentiality. Many current QPC protocols mainly concentrate on comparing the equality of private information between two users during a single execution, which restricts their scalability. To overcome this limitation, we present an efficient QPC protocol aimed at evaluating the equality of private information between two groups of users in one execution. This is achieved by leveraging the entanglement correlations present in each particle of a four-particle cluster state. In our approach, users encode their private data using bit flip or phase shift operators on the quantum sequence they receive, which is then sent back to a semi-trusted party which then determines whether the secrets of the two groups are equal and communicates the results to the users. By employing this method and facilitating the distributed transmission of the quantum sequence, our protocol achieves a qubit efficiency of 50%. Security analyses reveal that neither external attacks nor insider threats can successfully compromise the confidentiality of private data. Full article
(This article belongs to the Special Issue Quantum Communication and Applications)
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