Multipartite entanglement enables the generation of a shared secure key among multiple users. Selected for an Editors’ Suggestion.

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Experimental Phase-Matching Quantum Cryptographic Conferencing in Symmetric and Asymmetric Fiber Channels
Mi Zou, Bin-Chen Li, Shuai Zhao, Yingqiu Mao, Dandan Qin, Xiao Jiang, Teng-Yun Chen, and Jian-Wei Pan
Phys. Rev. Lett. 136, 020801 (2026)

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