摘要
Quantum secret sharing(QSS) is a typical multi-party quantum communication mode, in which the key sender splits a key into several parts and the participants can obtain the key by cooperation. Measurement-device-independent quantum secret sharing(MDI-QSS) is immune to all possible attacks from measurement devices and can greatly enhance QSS's security in practical applications. However, previous MDI-QSS's key generation rate is relatively low. Here, we adopt the polarization-spatial-mode hyper-encoding technology in the MDI-QSS, which can increase single photon's channel capacity. Meanwhile, we use the cross-Kerr nonlinearity to realize the complete hyper-entangled Greenberger-Horne-Zeilinger state analysis. Both above factors can increase MDI-QSS's key generation rate by about 10^(3). The proposed hyper-encoded MDI-QSS protocol may be useful for future multiparity quantum communication applications.
作者
Xing-Xing Ju
Wei Zhong
Yu-Bo Sheng
Lan Zhou
居星星;钟伟;盛宇波;周澜(College of Science,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology),Nanjing University of Posts and Telecommunications,Nanjing 210023,China;Institute of Quantum Information and Technology,Nanjing University of Posts and Telecommunications,Nanjing 210003,China)
基金
Project supported by the National Natural Science Foundation of China (Grant Nos. 11974189 and 12175106)。
