High-dimensional coherent one-way quantum key distribution

• URL: http://arxiv.org/abs/2105.04733v5
• Date: Tue, 11 Jul 2023 13:22:54 GMT
• Title: High-dimensional coherent one-way quantum key distribution
• Authors: Kfir Sulimany, Guy Pelc, Rom Dudkiewicz, Simcha Korenblit, Hagai S. Eisenberg, Yaron Bromberg, Michael Ben-Or
• Abstract summary: High-dimensional quantum key distribution (QKD) offers secure communication, with secure key rates that surpass those achievable by QKD protocols. Existing high-dimensional QKD protocols require additional experimental resources, such as multiport interferometers and multiple detectors. We present and analyze a novel protocol for arbitrary-dimensional QKD, that requires only the hardware of a standard two-dimensional system.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: High-dimensional quantum key distribution (QKD) offers secure communication, with secure key rates that surpass those achievable by QKD protocols utilizing two-dimensional encoding. However, existing high-dimensional QKD protocols require additional experimental resources, such as multiport interferometers and multiple detectors, thus raising the cost of practical high-dimensional systems and limiting their use. Here, we present and analyze a novel protocol for arbitrary-dimensional QKD, that requires only the hardware of a standard two-dimensional system. We provide security proofs against individual attacks and coherent attacks, setting an upper and lower bound on the secure key rates. Then, we test the new high-dimensional protocol in a standard two-dimensional QKD system over a 40 km fiber link. The new protocol yields a two-fold enhancement of the secure key rate compared to the standard two-dimensional coherent one-way protocol, without introducing any hardware modifications to the system. This work, therefore, holds great potential to enhance the performance of already deployed time-bin QKD systems through a software update alone. Furthermore, its applications extend across different encoding schemes of QKD qudits.

Related papers

• Practical hybrid PQC-QKD protocols with enhanced security and performance [44.8840598334124]
  We develop hybrid protocols by which QKD and PQC inter-operate within a joint quantum-classical network. In particular, we consider different hybrid designs that may offer enhanced speed and/or security over the individual performance of either approach.
  arXiv  Detail & Related papers  (2024-11-02T00:02:01Z)
• Towards efficient and secure quantum-classical communication networks [47.27205216718476]
  There are two primary approaches to achieving quantum-resistant security: quantum key distribution (QKD) and post-quantum cryptography (PQC) We introduce the pros and cons of these protocols and explore how they can be combined to achieve a higher level of security and/or improved performance in key distribution. We hope our discussion inspires further research into the design of hybrid cryptographic protocols for quantum-classical communication networks.
  arXiv  Detail & Related papers  (2024-11-01T23:36:19Z)
• On High-Dimensional Twin-Field Quantum Key Distribution [2.5725014718006647]
  Twin-Field Quantum Key Distribution (QKD) is a QKD protocol that uses single-photon interference to perform QKD over long distances. We define the essence of Twin-Field QKD and explore its generalization to higher dimensions.
  arXiv  Detail & Related papers  (2024-05-07T11:20:37Z)
• The Road to Near-Capacity CV-QKD Reconciliation: An FEC-Agnostic Design [53.67135680812675]
  A new codeword-based QKD reconciliation scheme is proposed. Both the authenticated classical channel (ClC) and the quantum channel (QuC) are protected by separate forward error correction (FEC) coding schemes. The proposed system makes QKD reconciliation compatible with a wide range of FEC schemes.
  arXiv  Detail & Related papers  (2024-03-24T14:47:08Z)
• One-sided DI-QKD secure against coherent attacks over long distances [0.0]
  Device-Independent (DI) QKD protocols overcome this issue by making minimal device assumptions. We show that a one-sided DI QKD scheme with two measurements per party is secure against coherent attacks up to detection efficiencies greater than 50.1% specifically on the untrusted side. We also show that, by placing the source of states close to the untrusted side, our protocol is secure over distances comparable to standard QKD protocols.
  arXiv  Detail & Related papers  (2024-03-18T15:01:17Z)
• Coding-Based Hybrid Post-Quantum Cryptosystem for Non-Uniform Information [53.85237314348328]
  We introduce for non-uniform messages a novel hybrid universal network coding cryptosystem (NU-HUNCC) We show that NU-HUNCC is information-theoretic individually secured against an eavesdropper with access to any subset of the links.
  arXiv  Detail & Related papers  (2024-02-13T12:12:39Z)
• 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)
• Security of a High Dimensional Two-Way Quantum Key Distribution Protocol [1.827510863075184]
  Two-way quantum key distribution protocols utilize bi-directional quantum communication to establish a shared secret key. We investigate a high-dimensional variant of the Ping Pong protocol and perform an information theoretic security analysis in the finite-key setting.
  arXiv  Detail & Related papers  (2022-03-06T15:36:54Z)
• 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)
• Efficient time-bin encoding for practical high-dimensional quantum key distribution [0.0]
  High-dimensional quantum key distribution (QKD) allows to achieve information-theoretic secure communications. We present a novel scheme for fiber-based 4-dimensional QKD, with time and phase encoding and one-decoy state technique.
  arXiv  Detail & Related papers  (2020-04-07T15:51:29Z)
• Reference-Frame-Independent, Measurement-Device-Independent quantum key distribution using fewer quantum states [1.1242503819703258]
  We show that RFI-MDI-QKD can be implemented using fewer quantum states than those of its original proposal. Compared to the conventional RFI-MDI-QKD where both parties should transmit six quantum states, it significantly simplifies the implementation of the QKD protocol.
  arXiv  Detail & Related papers  (2020-02-05T01:44:29Z)

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.