Breaking universal limitations on quantum conference key agreement without quantum memory

• URL: http://arxiv.org/abs/2212.05226v2
• Date: Tue, 11 Apr 2023 04:57:27 GMT
• Title: Breaking universal limitations on quantum conference key agreement without quantum memory
• Authors: Chen-Long Li, Yao Fu, Wen-Bo Liu, Yuan-Mei Xie, Bing-Hong Li, Min-Gang Zhou, Hua-Lei Yin, Zeng-Bing Chen
• Abstract summary: We report a measurement-device-independent quantum conference key agreement protocol with enhanced transmission efficiency over lossy channel. Our protocol can break key rate bounds on quantum communication over quantum network without quantum memory. Based on our results, we anticipate that our protocol will play an indispensable role in constructing multipartite quantum network.
• Score: 6.300599548850421
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum conference key agreement is an important cryptographic primitive for future quantum network. Realizing this primitive requires high-brightness and robust multiphoton entanglement sources, which is challenging in experiment and unpractical in application because of limited transmission distance caused by channel loss. Here we report a measurement-device-independent quantum conference key agreement protocol with enhanced transmission efficiency over lossy channel. With spatial multiplexing nature and adaptive operation, our protocol can break key rate bounds on quantum communication over quantum network without quantum memory. Compared with previous work, our protocol shows superiority in key rate and transmission distance within the state-of-the-art technology. Furthermore, we analyse the security of our protocol in the composable framework and evaluate its performance in the finite-size regime to show practicality. Based on our results, we anticipate that our protocol will play an indispensable role in constructing multipartite quantum network.

Related papers

• 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)
• Source-independent quantum secret sharing with entangled photon pair networks [15.3505990843415]
  We present an efficient source-independent QSS protocol utilizing entangled photon pairs in quantum networks. Our protocol has great performance and technical advantages in future quantum networks.
  arXiv  Detail & Related papers  (2024-07-23T13:24:28Z)
• Guarantees on the structure of experimental quantum networks [105.13377158844727]
  Quantum networks connect and supply a large number of nodes with multi-party quantum resources for secure communication, networked quantum computing and distributed sensing. As these networks grow in size, certification tools will be required to answer questions regarding their properties. We demonstrate a general method to guarantee that certain correlations cannot be generated in a given quantum network.
  arXiv  Detail & Related papers  (2024-03-04T19:00:00Z)
• Resource analysis for quantum-aided Byzantine agreement with the four-qubit singlet state [1.2094859111770522]
  In distributed computing, a Byzantine fault is a condition where a component behaves inconsistently, showing different symptoms to different components of the system. Our work highlights important engineering aspects of the future deployment of quantum communication protocols with multi-qubit entangled states.
  arXiv  Detail & Related papers  (2022-07-11T15:17:58Z)
• Conference key agreement in a quantum network [67.410870290301]
  Quantum conference key agreement (QCKA) allows multiple users to establish a secure key from a shared multi-partite entangled state. In a quantum network, this protocol can be efficiently implemented using a single copy of a N-qubit Greenberger-Horne-Zeilinger (GHZ) state to distil a secure N-user conference key bit.
  arXiv  Detail & Related papers  (2022-07-04T18:00:07Z)
• Benchmarking of Quantum Protocols [0.9176056742068812]
  We consider several quantum protocols that enable promising functionalities and services in near-future quantum networks. We use NetSquid simulation platform to evaluate the effect of various sources of noise on the performance of these protocols.
  arXiv  Detail & Related papers  (2021-11-03T21:17:04Z)
• The Computational and Latency Advantage of Quantum Communication Networks [70.01340727637825]
  This article summarises the current status of classical communication networks. It identifies some critical open research challenges that can only be solved by leveraging quantum technologies.
  arXiv  Detail & Related papers  (2021-06-07T06:31:02Z)
• Direct Quantum Communications in the Presence of Realistic Noisy Entanglement [69.25543534545538]
  We propose a novel quantum communication scheme relying on realistic noisy pre-shared entanglement. Our performance analysis shows that the proposed scheme offers competitive QBER, yield, and goodput.
  arXiv  Detail & Related papers  (2020-12-22T13:06:12Z)
• Designing a Quantum Network Protocol [0.0]
  We present a quantum network protocol designed to enable end-to-end quantum communication. One of the key challenges in near-term quantum technology is decoherence -- the gradual decay of quantum information. We show that the protocol is able to deliver its service even in the face of significant losses due to decoherence.
  arXiv  Detail & Related papers  (2020-10-06T09:41:14Z)
• High key rate quantum conference key agreement with unconditional security [13.32599647155171]
  Quantum conference key agreement (CKA) is an important cryptographic primitive of quantum cryptography. We propose a quantum CKA protocol of three users with information-theoretic security. Our scheme can be widely implemented in the approaching large-scale quantum network.
  arXiv  Detail & Related papers  (2020-06-18T01:47:17Z)
• Experimental quantum conference key agreement [55.41644538483948]
  Quantum networks will provide multi-node entanglement over long distances to enable secure communication on a global scale. Here we demonstrate quantum conference key agreement, a quantum communication protocol that exploits multi-partite entanglement. We distribute four-photon Greenberger-Horne-Zeilinger (GHZ) states generated by high-brightness, telecom photon-pair sources across up to 50 km of fibre.
  arXiv  Detail & Related papers  (2020-02-04T19:00:31Z)

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.