Year: 2024
Type: article
Abstract: Quantum-key-distribution (QKD) networks are gaining importance and it has become necessary to analyze the most appropriate methods for their long-distance interconnection. In this paper, four different methods of interconnecting remote QKD networks are proposed. The methods are used to link three different QKD testbeds in Europe, located in Berlin, Madrid, and Poznan. Although long-distance QKD links are only emulated, the methods used can serve as a blueprint for the secure interconnection of distant QKD networks in the future. Specifically, the presented approaches combine, in a transparent way, different fiber and satellite physical media, as well as common standards of key delivery interfaces. The testbed interconnections are designed to increase the security by utilizing multipath techniques and multiple hybridizations of QKD and post-quantum cryptography (PQC) algorithms.
Source: Entropy
DOI: 10.3390/e26020123
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,955
Awards: G120905174, G1325701057, G357246561, G434337789, G575169067, QuantERA II ERA-NET Cofund in Quantum Technologies, G6246469248, G6251103608, G6286326671, G6552004136, G6660179185, Quantum-oriented Update to Browsers and Infrastructures for the PQ Transition, Quantum Secure Networks Partnership
OpenAlex ID: W4391402929