Experimental setup for single-photon quantum key distribution using a quantum dot photon source. Selected for an Editors’ Suggestion.

From the article:

Experimental Single-Photon Quantum Key Distribution Surpassing the Fundamental Weak Coherent-State Rate Limit
Yang Zhang, Xing Ding, Yang Li, Likang Zhang, Yong-Peng Guo, Gao-Qiang Wang, Zhen Ning, Mo-Chi Xu, Run-Ze Liu, Jun-Yi Zhao, Geng-Yan Zou, Hui Wang, Yuan Cao, Yu-Ming He, Cheng-Zhi Peng, Yong-Heng Huo, Sheng-Kai Liao, Chao-Yang Lu, Feihu Xu, and Jian-Wei Pan
Phys. Rev. Lett. 134, 210801 (2025)

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