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Year-ender: China's sci-tech achievements in 2022

chinadaily.com.cn | Updated: 2022-12-26 06:40
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[Photo/Xinhua]

World's longest quantum secure direct communication

Chinese scientists have realized the world's longest quantum secure direct communication, measuring 100 km.

The findings were unveiled in an article titled "Realization of quantum secure direct communication over 100 km fiber with time-bin and phase quantum states," published in early April in the journal Light: Science & Applications.

Before this breakthrough, the longest QSDC distance published was 18 km.

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