Photonics Technologies for Smart Quantum Networks

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "New Applications Enabled by Photonics Technologies and Systems".

Deadline for manuscript submissions: closed (30 April 2022) | Viewed by 7493

Special Issue Editor


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Guest Editor
Photonics Communications Research Laboratory, School of Electrical and Computer Engineering, National Technical University of Athens, Iroon Polytechniou 9 Str., Zografou, 15780 Athens, Greece
Interests: quantum key distribution systems; deployment-oriented QKD integration; integrated photonics for QIP applications; converged fiber/wireless networks for 5G and beyond
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Special Issue Information

Dear Colleagues,

In the last quarter of the 20th century, streams of millions of photons per each classical symbol started travelling along the fiber networks to realize the backbone of digital infrastructure. Approaching the era of practical and scalable quantum information processing, single photons are ready to undertake their new challenge by encoding and distributing quantum states along the communication infrastructure of quantum internet1.

This new mission for photonics requires the mobilization of research groups and synergies between classical and quantum optical communication engineers, working together on the development of practical building blocks and network segments for secured quantum-based infrastructure. Building upon the legacy of classical optical communications, quantum blocks and networks will leverage advances in prototypes and product developments of devices and subsystems to use photonic integrated circuits, advanced digital transmission ecosystems, and software-defined optical networking.

This Special Issue of Photonics, entitled “Photonics Technologies for Smart Quantum Networks”, welcomes articles addressing, among others, the deployment of a practical quantum toolbox enabling (sub)systems and quantum-enhanced secured networks and infrastructures. We expect to cover a variety of topics, including the following:

  • Novel optical systems for QKD and QIP building blocks;
  • Photonic integration in support of quantum technological blocks;
  • QKD-enabled infrastructure including fiber/terrestrial FSO/satellite quantum links;
  • Quantum secured infrastructure for networks;
  • QKD and PQC integration and interfaces;
  • Quantum networks and applications beyond QKD;
  • DV-/CV-QKD and quantum safe security for future optical/wireless networks;
  • Advanced features (SDN/NFV/AI/ML) for smart multinode connectivity;
  • Entanglement distribution deployments and networks;
  • Sources of entanglement for practical quantum nodes.

1 Wehner et al., Science 362, 303 (2018).

Dr. Giannis Giannoulis
Guest Editor

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Published Papers (2 papers)

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Research

20 pages, 3599 KiB  
Article
LEO Satellites Constellation-to-Ground QKD Links: Greek Quantum Communication Infrastructure Paradigm
by Argiris Ntanos, Nikolaos K. Lyras, Dimitris Zavitsanos, Giannis Giannoulis, Athanasios D. Panagopoulos and Hercules Avramopoulos
Photonics 2021, 8(12), 544; https://doi.org/10.3390/photonics8120544 - 30 Nov 2021
Cited by 10 | Viewed by 4146
Abstract
Quantum key distribution (QKD) has gained a lot of attention over the past few years, but the implementation of quantum security applications is still challenging to accomplish with the current technology. Towards a global-scale quantum-secured network, satellite communications seem to be a promising [...] Read more.
Quantum key distribution (QKD) has gained a lot of attention over the past few years, but the implementation of quantum security applications is still challenging to accomplish with the current technology. Towards a global-scale quantum-secured network, satellite communications seem to be a promising candidate to successfully support the quantum communication infrastructure (QCI) by delivering quantum keys to optical ground terminals. In this research, we examined the feasibility of satellite-to-ground QKD under daylight and nighttime conditions using the decoy-state BB84 QKD protocol. We evaluated its performance on a hypothetical constellation with 10 satellites in sun-synchronous Low Earth Orbit (LEO) that are assumed to communicate over a period of one year with three optical ground stations (OGSs) located in Greece. By taking into account the atmospheric effects of turbulence as well as the background solar radiance, we showed that positive normalized secure key rates (SKRs) up to 3.9×104 (bps/pulse) can be obtained, which implies that satellite-to-ground QKD can be feasible for various conditions, under realistic assumptions in an existing infrastructure. Full article
(This article belongs to the Special Issue Photonics Technologies for Smart Quantum Networks)
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11 pages, 842 KiB  
Communication
Remote Quantum-Safe Authentication of Entities with Physical Unclonable Functions
by Georgios M. Nikolopoulos
Photonics 2021, 8(7), 289; https://doi.org/10.3390/photonics8070289 - 20 Jul 2021
Cited by 5 | Viewed by 2486
Abstract
Physical unclonable functions have been shown to be a useful resource of randomness for implementing various cryptographic tasks including entity authentication. All the related entity authentication protocols that have been discussed in the literature so far, either they are vulnerable to an emulation [...] Read more.
Physical unclonable functions have been shown to be a useful resource of randomness for implementing various cryptographic tasks including entity authentication. All the related entity authentication protocols that have been discussed in the literature so far, either they are vulnerable to an emulation attack, or they are limited to short distances. Hence, quantum-safe remote entity authentication over large distances remains an open question. In the first part of this work, we discuss the requirements that an entity authentication protocol has to offer, to be useful for remote entity authentication in practice. Subsequently, we propose a protocol, which can operate over large distances, and offers security against both classical and quantum adversaries. The proposed protocol relies on standard techniques, it is fully compatible with the infrastructure of existing and future photonic networks, and it can operate in parallel with other quantum protocols, including QKD protocols. Full article
(This article belongs to the Special Issue Photonics Technologies for Smart Quantum Networks)
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