Quantum cryptography beyond key distribution: theory and experiment

Due to its fundamental principles, quantum theory holds the promise to enhance the security of modern cryptography, from message encryption to anonymous communication, digital signatures, online banking, leader election, one-time passwords and delegated computation. While quantum key distribution (Q...

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Bibliographic Details
Published in:arXiv.org 2024-11
Main Authors: Bozzio, Mathieu, Crépeau, Claude, Wallden, Petros, Walther, Philip
Format: Article
Language:English
Subjects:
Cybersecurity
Digital signatures
Online banking
Quantum computing
Quantum cryptography
Quantum theory
Online Access:Get full text
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Summary:Due to its fundamental principles, quantum theory holds the promise to enhance the security of modern cryptography, from message encryption to anonymous communication, digital signatures, online banking, leader election, one-time passwords and delegated computation. While quantum key distribution (QKD) has already enabled secure key exchange over hundreds of kilometers, a myriad of other quantum-cryptographic primitives are being developed to secure future applications against quantum adversaries. This article surveys the theoretical and experimental developments in quantum cryptography beyond QKD over the past decades, along with advances in secure quantum computation. It provides an intuitive classification of the main quantum primitives and their security levels, summarizes their possibilities and limits, and discusses their implementation with current photonic technology.
ISSN:2331-8422