Experimental quantum secret sharing and third-man quantum cryptography.
Quantum secret sharing (QSS) and third-man quantum cryptography (TQC) are essential for advanced quantum communication; however, the low intensity and fragility of the multiphoton entanglement source in previous experiments have made their realization an extreme experimental challenge. Here, we develop and exploit an ultrastable high intensity source of four-photon entanglement to report an experimental realization of QSS and TQC. The technology developed in our experiment will be important for future multiparty quantum communication.
Chen
Yu-Ao
YA
Hefei National Laboratory for Physical Sciences at Microscale, Department of Modern Physics, University of Science and Technology of China, Hefei, 230027, People's Republic of China.
Zhang
An-Ning
AN
Zhao
Zhi
Z
Zhou
Xiao-Qi
XQ
Lu
Chao-Yang
CY
Peng
Cheng-Zhi
CZ
Yang
Tao
T
Pan
Jian-Wei
JW