Dynamic Entanglement Distribution for Multi-User and Multi-Protocol Quantum Networking

• URL: http://arxiv.org/abs/2607.15262v1
• Date: Thu, 16 Jul 2026 17:54:43 GMT
• Title: Dynamic Entanglement Distribution for Multi-User and Multi-Protocol Quantum Networking
• Abstract summary: A quantum reconfigurable optical add-drop multiplexer (q-ROADM) dynamically distributes polarisation-entangled photon pairs from a broadband source to six users over deployed campus and metropolitan fibre.<n>We demonstrate stable six-user full-mesh operation over more than 150 hours, compare full-mesh and time-shared partial-mesh strategies under different source and detector conditions, and realise quantum network slicing with optional/additional interconnection links.<n>These results demonstrate a q-ROADM-enabled entanglement distribution architecture as a novel route towards reconfigurable, service-oriented quantum networking over optical fibre infrastructure.
• Score: 3.4294079441889314
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Dynamic entanglement distribution is a key requirement for scalable, multi-user and multi-protocol quantum networks. We demonstrate a metropolitan-scale entanglement-based quantum communication network enabled by a quantum reconfigurable optical add-drop multiplexer (q-ROADM), which dynamically distributes polarisation-entangled photon pairs from a broadband source to six users over deployed campus and metropolitan fibre. The network supports programmable full-mesh, partial-mesh and sliced sub-network configurations, enabling flexible allocation of entanglement resources according to link condition and service requirement. We demonstrate stable six-user full-mesh operation over more than 150 hours, compare full-mesh and time-shared partial-mesh strategies under different source and detector conditions, and realise quantum network slicing with optional/additional interconnection links. We also show that the same infrastructure can support different quantum protocols by showcasing Secure Inaugural Authentication-Transfer (SIAT) combined with Network flooding over multiple paths to improve the security of onboarding a new user. These results demonstrate a q-ROADM-enabled entanglement distribution architecture as a novel route towards reconfigurable, service-oriented quantum networking over optical fibre infrastructure.

Related papers

• A Distributed Switching Protocol for Quantum Networks [0.22166578153935787]
  We propose a switching protocol for unbuffered, multidrop quantum networks in a photonic synchronization domain.<n>Two end nodes cooperatively select the target BSA node with the lowest path cost and independently reserve each path within the network.<n>Results demonstrate high link establishment success with stable performance even under increased network load.
  arXiv  Detail & Related papers  (2026-05-08T06:04:28Z)
• A Large-Scale Reconfigurable Multiplexed Quantum Photonic Network [34.82692226532414]
  Entanglement distribution in quantum networks will enable next-generation technologies for quantum-secured communications, distributed quantum computing and sensing.<n>Future quantum networks will require dense connectivity, allowing multiple users to share entanglement in a reconfigurable and multiplexed manner.<n>We demonstrate a prototype global reconfigurable network where entanglement is routed and teleported in a flexible and multiplexed manner between two local multi-user networks composed of four users each.
  arXiv  Detail & Related papers  (2025-01-13T12:35:41Z)
• Resilient Entanglement Distribution in a Multihop Quantum Network [0.605746798865181]
  We introduce multihop quantum networks to improve network reach and resilience. We present multihop two-qubit polarization-entanglement distribution within a quantum network at the Oak Ridge National Laboratory campus.
  arXiv  Detail & Related papers  (2024-07-29T22:42:08Z)
• 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)
• A scheme for multipartite entanglement distribution via separable carriers [68.8204255655161]
  We develop a strategy for entanglement distribution via separable carriers that can be applied to any number of network nodes. We show that our protocol results in multipartite entanglement, while the carrier mediating the process is always in a separable state with respect to the network.
  arXiv  Detail & Related papers  (2022-06-20T10:50:45Z)
• Controllable entangled state distribution in a dual-rail reconfigurable optical network [62.997667081978825]
  Reconfigurable distribution of entangled states is essential for operation of quantum networks connecting multiple devices such as quantum memories and quantum computers. We introduce new quantum distribution network architecture enabling control of the entangled state propagation direction using linear-optical devices and phase shifters.
  arXiv  Detail & Related papers  (2021-08-04T10:26:37Z)
• Optimized Quantum Networks [68.8204255655161]
  Quantum networks offer the possibility to generate different kinds of entanglement prior to network requests. We utilize this to design entanglement-based quantum networks tailored to their desired functionality.
  arXiv  Detail & Related papers  (2021-07-21T18:00:07Z)
• A Reconfigurable Quantum Local Area Network Over Deployed Fiber [1.1713998235451095]
  We implement flex-grid entanglement distribution in a deployed network for the first time. We quantify the quality of the distributed polarization entanglement via log-negativity. We demonstrate one possible quantum protocol enabled by the distributed entanglement network.
  arXiv  Detail & Related papers  (2021-02-26T17:08:03Z)
• Flexible entanglement-distribution network with an AlGaAs chip for secure communications [0.0]
  We demonstrate reconfigurable entanglement distribution between up to 8 users in a resource-optimized quantum network topology. As a benchmark application we use quantum key distribution, and show low error and high secret key generation rates. Together with the potential of our semiconductor source for distributing secret keys over a 60 nm bandwidth with commercial multiplexing technology, these results offer a promising route to the deployment of scalable quantum network architectures.
  arXiv  Detail & Related papers  (2021-02-09T14:13:07Z)
• Purification and Entanglement Routing on Quantum Networks [55.41644538483948]
  A quantum network equipped with imperfect channel fidelities and limited memory storage time can distribute entanglement between users. We introduce effectives enabling fast path-finding algorithms for maximizing entanglement shared between two nodes on a quantum network.
  arXiv  Detail & Related papers  (2020-11-23T19:00:01Z)
• SeQUeNCe: A Customizable Discrete-Event Simulator of Quantum Networks [53.56179714852967]
  This work develops SeQUeNCe, a comprehensive, customizable quantum network simulator. We implement a comprehensive suite of network protocols and demonstrate the use of SeQUeNCe by simulating a photonic quantum network with nine routers equipped with quantum memories. We are releasing SeQUeNCe as an open source tool and aim to generate community interest in extending it.
  arXiv  Detail & Related papers  (2020-09-25T01:52:15Z)

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.