Implementation of a 46-node quantum metropolitan area network

• URL: http://arxiv.org/abs/2109.04736v1
• Date: Fri, 10 Sep 2021 08:32:58 GMT
• Title: Implementation of a 46-node quantum metropolitan area network
• Authors: Teng-Yun Chen, Xiao Jiang, Shi-Biao Tang, Lei Zhou, Xiao Yuan, Hongyi Zhou, Jian Wang, Yang Liu, Luo-Kan Chen, Wei-Yue Liu, Hong-Fei Zhang, Ke Cui, Hao Liang, Xiao-Gang Li, Yingqiu Mao, Liu-Jun Wang, Si-Bo Feng, Qing Chen, Qiang Zhang, Li Li, Nai-Le Liu, Cheng-Zhi Peng, Xiongfeng Ma, Yong Zhao, Jian-Wei Pan
• Abstract summary: We present a field operation of a quantum metropolitan-area network with 46 nodes. We show that all these challenges can be overcome with cutting-edge quantum technologies. In this implementation, the final keys have been used for secure communication such as real-time voice telephone, text messaging, and file transmission with one-time pad encryption.
• Score: 19.917097498650243
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum key distribution (QKD) enables secure key exchanges between two remote users. The ultimate goal of secure communication is to establish a global quantum network. The existing field tests suggest that quantum networks are feasible. To achieve a practical quantum network, we need to overcome several challenges, including realising versatile topologies for large scales, simple network maintenance, extendable configuration, and robustness to node failures. To this end, we present a field operation of a quantum metropolitan-area network with 46 nodes and show that all these challenges can be overcome with cutting-edge quantum technologies. In particular, we realise different topological structures and continuously run the network for 31 months, by employing standard equipment for network maintenance with an extendable configuration. We realise QKD pairing and key management with a sophisticated key control center. In this implementation, the final keys have been used for secure communication such as real-time voice telephone, text messaging, and file transmission with one-time pad encryption, which can support 11 pairs of users to make audio calls simultaneously. Combined with inter-city quantum backbone and ground-satellite links, our metropolitan implementation paves the way toward a global quantum network.

Related papers

• Guarantees on the structure of experimental quantum networks [109.08741987555818]
  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)
• Continuous-variable quantum passive optical network [0.0]
  We propose continuous-variable quantum passive-optical-network (CV-QPON) protocols, enabling deterministic and simultaneous secret key generation among all network users. We show two protocols with different trust levels assigned to the network users and experimentally demonstrate key generation in a quantum access network with 8 users.
  arXiv  Detail & Related papers  (2024-02-25T09:56:56Z)
• A Quantum-Classical Collaborative Training Architecture Based on Quantum State Fidelity [50.387179833629254]
  We introduce a collaborative classical-quantum architecture called co-TenQu. Co-TenQu enhances a classical deep neural network by up to 41.72% in a fair setting. It outperforms other quantum-based methods by up to 1.9 times and achieves similar accuracy while utilizing 70.59% fewer qubits.
  arXiv  Detail & Related papers  (2024-02-23T14:09:41Z)
• Entanglement-Assisted Quantum Networks: Mechanics, Enabling Technologies, Challenges, and Research Directions [66.27337498864556]
  This paper presents a comprehensive survey of entanglement-assisted quantum networks. It provides a detailed overview of the network structure, working principles, and development stages. It also emphasizes open research directions, including architecture design, entanglement-based network issues, and standardization.
  arXiv  Detail & Related papers  (2023-07-24T02:48:22Z)
• A round-trip multi-band quantum access network [5.894846988315471]
  We propose an expandable and cost-effective quantum access network, in which the round-trip structure makes quantum states travel in a circle to carry the information. We realize multi-user secure key sharing through the continuous-variable QKD (CV-QKD) protocol. The results show that each user can achieve excess noise suppression and 600 bps level secure key generation under 30 km standard fiber transmission.
  arXiv  Detail & Related papers  (2023-05-10T06:14:13Z)
• Quantum communication networks with optical vortices [0.0]
  Quantum communications bring a paradigm change in internet security by using quantum resources to establish secure keys between parties. Present-day quantum communications networks are mainly point-to-point and use trusted nodes and key management systems to relay the keys. Future quantum networks, including the quantum internet, will have complex topologies in which groups of users are connected and communicate with each-other.
  arXiv  Detail & Related papers  (2023-04-10T18:08:01Z)
• An Evolutionary Pathway for the Quantum Internet Relying on Secure Classical Repeaters [64.48099252278821]
  We conceive quantum networks using secure classical repeaters combined with the quantum secure direct communication principle. In these networks, the ciphertext gleaned from a quantum-resistant algorithm is transmitted using QSDC along the nodes. We have presented the first experimental demonstration of a secure classical repeater based hybrid quantum network.
  arXiv  Detail & Related papers  (2022-02-08T03:24:06Z)
• Advanced Architectures for High-Performance Quantum Networking [1.3280207637024473]
  We propose and demonstrate a quantum local area network design that addresses current deployment limitations in timing and security. We employ White Rabbit switches to synchronize three remote nodes with ultra-low timing jitter, significantly increasing the fidelities of the distributed entangled states. Second, using a parallel quantum key distribution channel, we secure the classical communications needed for instrument control and data management.
  arXiv  Detail & Related papers  (2021-11-30T16:37:21Z)
• 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)
• Realization of a multi-node quantum network of remote solid-state qubits [0.45823749779393547]
  We report on the experimental realization of a three-node entanglement-based quantum network. We achieve real-time communication and feed-forward gate operations across the network. We capitalize on the novel capabilities of this network to realize two canonical protocols without post-selection.
  arXiv  Detail & Related papers  (2021-02-08T19:00:03Z)
• 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.