Academic Journal
Security of differential phase shift QKD from relativistic principles
| العنوان: | Security of differential phase shift QKD from relativistic principles |
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| المؤلفون: | Sandfuchs, Martin, Haberland, Marcus, Vilasini, V., Wolf, Ramona |
| المساهمون: | Institute for Theoretical Physics ETH Zürich (ITP), Department of Physics = Departement Physik ETH Zürich (D-PHYS), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich)-Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich), Max Planck Institute for Gravitational Physics (Albert Einstein Institute) (AEI), Max-Planck-Gesellschaft, Traitement optimal de l'information avec des dispositifs quantiques (QINFO), Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-École normale supérieure de Lyon (ENS de Lyon), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université Grenoble Alpes (UGA)-Inria Lyon, Institut National de Recherche en Informatique et en Automatique (Inria), Naturwissenschaftlich-Technische Fakultät (Universität Siegen) |
| المصدر: | ISSN: 2521-327X ; Quantum ; https://inria.hal.science/hal-04907376 ; Quantum, 2025, 9, pp.1611. ⟨10.22331/q-2025-01-27-1611⟩. |
| بيانات النشر: | CCSD Verein |
| سنة النشر: | 2025 |
| المجموعة: | Université de Lyon: HAL |
| مصطلحات موضوعية: | [PHYS]Physics [physics], [INFO]Computer Science [cs], [MATH]Mathematics [math] |
| الوصف: | Published version with slightly expanded introduction ; International audience ; The design of quantum protocols for secure key generation poses many challenges: On the one hand, they need to be practical concerning experimental realisations. On the other hand, their theoretical description must be simple enough to allow for a security proof against all possible attacks. Often, these two requirements are in conflict with each other, and the differential phase shift (DPS) QKD protocol exemplifies these difficulties: It is designed to be implementable with current optical telecommunication technology, which, for this protocol, comes at the cost that many standard security proof techniques do not apply to it. After about 20 years since its invention, this work presents the first full security proof of DPS QKD against general attacks, including finite-size effects. The proof combines techniques from quantum information theory, quantum optics, and relativity. We first give a security proof of a QKD protocol whose security stems from relativistic constraints. We then show that security of DPS QKD can be reduced to security of the relativistic protocol. In addition, we show that coherent attacks on the DPS protocol are, in fact, stronger than collective attacks. Our results have broad implications for the development of secure and reliable quantum communication technologies, as they shed light on the range of applicability of state-of-the-art security proof techniques. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/arxiv/2301.11340; ARXIV: 2301.11340 |
| DOI: | 10.22331/q-2025-01-27-1611 |
| الاتاحة: | https://inria.hal.science/hal-04907376 https://inria.hal.science/hal-04907376v1/document https://inria.hal.science/hal-04907376v1/file/2301.11340v3.pdf https://doi.org/10.22331/q-2025-01-27-1611 |
| Rights: | http://creativecommons.org/licenses/by/ ; info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.A16884E0 |
| قاعدة البيانات: | BASE |
| DOI: | 10.22331/q-2025-01-27-1611 |
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