--- title: "Quantum Networking Beyond the Lab" url: https://daily.dev/posts/quantum-networking-beyond-the-lab-urd4afvut source_url: https://blogs.cisco.com/news/quantum-networking-beyond-the-lab type: article source: "Cisco" published: 2026-03-19T12:04:12.075Z updated: 2026-03-19T12:05:01.492Z tags: ["cisco", "distributed-systems"] reading_time: 5 upvotes: 1 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Quantum Networking Beyond the Lab **[Cisco](https://daily.dev/sources/cisco)** · 5 min read · 1 upvotes · 0 comments ## Summary Cisco, Qunnect, NYU, and QTD Systems have demonstrated a quantum entanglement network across 17.6 km of live telecom fiber in New York City, connecting three nodes between Brooklyn and Manhattan. The experiment achieved entanglement swapping rates of over 5,400 pairs per hour deployed and 1.7 million pairs per hour locally, with polarization fidelity above 99%. A key breakthrough was eliminating the shared laser synchronization requirement that previously limited scalability, replacing it with Cisco's software-defined control plane using the White Rabbit timing protocol for picosecond-level accuracy. The hub-and-spoke architecture uses cryogenic equipment at central hubs and room-temperature hardware at edges, enabling expansion on existing fiber infrastructure without rebuilding core synchronization systems. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Quantum Networking Breakthrough Points to Key Security Gains](https://daily.dev/posts/quantum-networking-breakthrough-points-to-key-security-gains-rutlk0ch8) · Security Boulevard · 1 upvotes · 0 comments - [Northwestern University Researchers Demonstrate Quantum Entanglement Over Busy Telecom Fiber](https://daily.dev/posts/northwestern-university-researchers-demonstrate-quantum-entanglement-over-busy-telecom-fiber-0hlkjclqd) · The Quantum Insider · 0 upvotes · 0 comments - [The switch that quantum networking has been waiting for](https://daily.dev/posts/the-switch-that-quantum-networking-has-been-waiting-for-n5tx4eqth) · Cisco · 0 upvotes · 0 comments - [NIST Researchers Demonstrate Entangled Photon Transmission Over Existing Fiber Networks](https://daily.dev/posts/nist-researchers-demonstrate-entangled-photon-transmission-over-existing-fiber-networks-bfwry5kbc) · The Quantum Insider · 0 upvotes · 0 comments --- Tags: [#cisco](https://daily.dev/tags/cisco), [#distributed-systems](https://daily.dev/tags/distributed-systems) [View this post on daily.dev](https://daily.dev/posts/quantum-networking-beyond-the-lab-urd4afvut)