On February 12th, significant progress was made in quantum chip and quantum network technology. The international academic journal Nature published a new achievement online in the early hours of the same day: Chinese scientists have successfully built the world's first large-scale quantum key distribution network based on integrated photonic quantum chips. This network supports simultaneous communication among 20 chip users, with a networking range of up to 3,700 kilometers, leading internationally in both user scale and networking capabilities.
