Differential phase shift quantum secret sharing using a twin field

Quantum secret sharing (QSS) is essential for multiparty quantum communication, which one of cornerstones in the future internet. However, a linear rate-distance limitation severely constrains secure key rate and transmission distance QSS. Here, we present practical QSS protocol among three participants based on differential phase shift scheme twin field ideas solution high-efficiency communication task. In contrast to formerly proposed protocol, our can break bound, theoretically improving by orders magnitude 300-km-long fiber. Furthermore, new against Trojan horse attacks that cannot be resisted previous