---
title: "Microcomb-driven large-scale fully connected quantum network"
url: https://daily.dev/posts/microcomb-driven-large-scale-fully-connected-quantum-network-c5tfhwpka
source_url: https://www.nature.com/articles/s41467-026-75658-6
type: article
source: "Nature"
published: 2026-08-03T11:09:42.656Z
updated: 2026-08-03T11:10:01.360Z
reading_time: 3
upvotes: 0
comments: 0
language: en
---

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# Microcomb-driven large-scale fully connected quantum network

**[Nature](https://daily.dev/sources/nature)** · 3 min read · 0 upvotes · 0 comments

## Summary

Researchers demonstrate a large-scale fully connected quantum network using integrated soliton microcomb (SMC) and photonic encoding chips. The system leverages two-photon Hong-Ou-Mandel interference and measurement-device-independent (MDI) quantum key distribution to guarantee user-to-user security even with an untrusted network provider. The architecture achieves operation over 200 km of fiber with information-theoretic security, enabling massively parallel frequency generation and high-visibility interference, paving the way for metropolitan and intercity quantum networks.

## Full article

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