中国科学技术大学研究人员成功部署多模量子中继网络，在14.5公里光纤中实现物质-物质纠缠。
该系统名为“Xinghan-2”，于5月7日在《自然光子学》期刊上发表。它解决了量子通信中的一个关键瓶颈，同时实现高传输速率和高保真度。
研究团队由李传锋和周宗权领导。他们开发了一种时间测量协议，结合多模量子存储器，使光子无需同时到达中间站。
评审专家指出，该系统的纠缠分布速率比以往城市量子中继快100多倍。保真度达到78.6%，并使用现有光纤基础设施。
李传锋表示，这是目前报道的最长物质-物质纠缠距离，并从实验室走向实际城市网络应用。
An international team of researchers has achieved a milestone in quantum communication by teleporting the polarization state of a single photon between two separate quantum dots over a 270-meter open-air link. The experiment, conducted at Sapienza University of Rome, demonstrates the potential for quantum relays in future quantum networks. The findings were published in Nature Communications.
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Researchers at the University of Science and Technology of China have developed the Jiuzhang 4.0 photonic quantum computing prototype, which manipulates 3,050 photons and sets a new record.
Quantum physicist Zhu Zijie has returned to China from Switzerland to join Fudan University as a Xianghui Young Scholar and associate professor at the Xianghui Academy. He aims to conduct cutting-edge research in cold atoms. Previously, he graduated from Peking University and studied at ETH Zurich, Albert Einstein's alma mater, staying for postdoctoral work.
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A Chinese research ship has successfully tested a new electro-hydrostatic actuator capable of slicing undersea cables at depths up to 3,500 meters. The trial, conducted aboard the Haiyang Dizhi 2, bridges the gap from development to practical application, according to official reports. The demonstration coincides with heightened concerns over sabotage of global submarine cables.
Researchers at Nanjing University have identified a new quantum state of matter in a thin carbon material that electrons neither fully two-dimensional nor three-dimensional. The discovery, termed the transdimensional anomalous Hall effect, emerged unexpectedly during experiments in magnetic fields. Lei Wang and his team confirmed the phenomenon after a year of analysis.