QKD protected fiber-based infrastructure for time dissemination

• URL: http://arxiv.org/abs/2412.17731v1
• Date: Mon, 23 Dec 2024 17:28:39 GMT
• Title: QKD protected fiber-based infrastructure for time dissemination
• Authors: Alice Meda, Alberto Mura, Salvatore Virzì, Alessio Avella, Filippo Levi, Ivo P. Degiovanni, Andrea Geraldi, Mauro Valeri, Silvia Di Bartolo, Tommaso Catuogno, Mattia Verducci, Marco Genovese, Davide Calonico,
• Abstract summary: The proposed technique allows to disseminate secure and precise signals between two fiber-opticconnected locations.<n>This secure exchange allows the secret sharing of time information between two parties for the synchronization of distant clocks.<n>When encrypted, time signals would reveal to a third party no useful information about the synchronization status, providing a time stability two orders of magnitude worsened.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: In this study, we demonstrate the possibility to protect, with Quantum Key Distribution (QKD), a critical infrastructure as the fiber-based one used for time and frequency (TF) dissemination service. The proposed technique allows to disseminate secure and precise TF signals between two fiber-opticconnected locations, on a critical infrastructure, using both QKD and White Rabbit technique. This secure exchange allows the secret sharing of time information between two parties for the synchronization of distant clocks with the highest stability and traceable to the Italian time scale. When encrypted, time signals would reveal to a third party no useful information about the synchronization status, providing a time stability two orders of magnitude worsened.

Related papers

• Entanglement-based clock syntonization for quantum key distribution networks. Demonstration over a 50 km-long link [0.0]
  We present the implementation of a time synchronization protocol as part of an experimentally deployed entanglement-based quantum key distribution link. The system is deployed over 48 km of optical fibers across the M'etropole Cote d'Azur. We exploit the time correlation of paired photons generated by a high-quality source of energy-time entanglement to synchronize two rubidium clocks located at the end stations.
  arXiv  Detail & Related papers  (2025-01-28T08:56:13Z)
• Digital Twin-Assisted Federated Learning with Blockchain in Multi-tier Computing Systems [67.14406100332671]
  In Industry 4.0 systems, resource-constrained edge devices engage in frequent data interactions. This paper proposes a digital twin (DT) and federated digital twin (FL) scheme. The efficacy of our proposed cooperative interference-based FL process has been verified through numerical analysis.
  arXiv  Detail & Related papers  (2024-11-04T17:48:02Z)
• Blockwise Key Distillation in Satellite-based Quantum Key Distribution [68.8891637551539]
  We compare two key distillation techniques for satellite-based quantum key distribution. One is the traditional em non-blockwise strategy that treats all the signals as a whole. The other is a em blockwise strategy that divides the signals into individual blocks that have similar noise characteristics and processes them independently.
  arXiv  Detail & Related papers  (2023-07-10T01:34:58Z)
• Eavesdropper localization for quantum and classical channels via nonlinear scattering [58.720142291102135]
  Quantum key distribution (QKD) offers theoretical security based on the laws of physics. We present a novel approach to eavesdropper location that can be employed in quantum as well as classical channels. We demonstrate that our approach outperforms conventional OTDR in the task of localizing an evanescent outcoupling of 1% with cm precision inside standard optical fibers.
  arXiv  Detail & Related papers  (2023-06-25T21:06:27Z)
• Practical quantum secure direct communication with squeezed states [55.41644538483948]
  We report the first table-top experimental demonstration of a CV-QSDC system and assess its security. This realization paves the way into future threat-less quantum metropolitan networks, compatible with coexisting advanced wavelength division multiplexing (WDM) systems.
  arXiv  Detail & Related papers  (2023-06-25T19:23:42Z)
• International time transfer between precise timing facilities secured with a quantum key distribution network [0.0]
  GPS and Galileo provide precise time and space coordinates globally. To reliably operate, a highly accurate and stable system time is required. We have performed a field trial demonstration of such use-case by sharing encrypted time synchronization information.
  arXiv  Detail & Related papers  (2023-05-02T15:55:20Z)
• Twin-field quantum key distribution without phase locking [18.013181607967322]
  We show an approach to recover the single-photon interference pattern and realize TF-QKD emphwithout phase locking. Our work provides a scalable and practical solution to TF-QKD, thus representing an important step towards its wide applications.
  arXiv  Detail & Related papers  (2022-12-08T15:03:12Z)
• Continuous entanglement distribution over a transnational 248 km fibre link [58.720142291102135]
  Entanglement is the basis of many quantum applications. We present a continuously working international link between Austria and Slovakia. We measure stable pair rates of 9 s$-1$ over an exemplary operation time of 110 hours.
  arXiv  Detail & Related papers  (2022-03-23T13:55:27Z)
• Path-encoded high-dimensional quantum communication over a 2 km multicore fiber [50.591267188664666]
  We demonstrate the reliable transmission over a 2 km long multicore fiber of path-encoded high-dimensional quantum states. A stable interferometric detection is guaranteed, allowing for low error rates and the generation of 6.3 Mbit/s of secret key rate.
  arXiv  Detail & Related papers  (2021-03-10T11:02:45Z)
• Resource-effective Quantum Key Distribution: a field-trial in Padua city center [0.0]
  Quantum Key Distribution (QKD) allows distant parties to distill a secret key with unconditional security. We present a field-trial which exploits a low-complexity self-stabilized hardware and a novel synchronization technique.
  arXiv  Detail & Related papers  (2020-12-15T17:54:29Z)
• Towards satellite-based quantum-secure time transfer [6.971780549888377]
  We propose a satellite-based quantum-secure time transfer (QSTT) scheme based on two-way quantum key distribution (QKD) in free-space. In QSTT, a quantum signal (e.g., single photon) is used as the carrier for both the time transfer and the secret-key generation, offering quantum-enhanced security for transferring time signal and time information. We perform a satellite-to-ground time synchronization using single-photon-level signals and achieve a quantum bit error rate of less than 1%, a time data rate of 9 kHz and a time-transfer
  arXiv  Detail & Related papers  (2020-06-01T01:50:18Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.