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Direct measurement of the winding number in quantum walks[2018-06-28]
Prof. Chuan-Feng Li, Prof. Yong-Jian Han and Dr. Xiao-Ye Xu, from Key Laboratory of Quantum Information, and their team, have made breakthrough in the field of quantum walks and their topology. They built a large-scale quantum-walk platform up to 50 steps based on the time multiplexing protocol. Further they directly measured the winding number in a quantum walk with chiral symmetry for the first ... -
Scientists Observe Stronger-than-Binary Correlations with En...[2018-05-07]
Prof. Chuan-Feng Li’s Group of CAS Key Laboratory of Quantum Information has made new progress in the study of fundamental problems in quantum mechanics. Chuan-Feng Li, Bi-Heng Liu, and others collaborated with theoretical physicists from Spain, Hungary, and Germany to demonstrate for the first time the existence of stronger-than-binary correlations in quantum mechanics. The results were publishe...
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USTC develops all-optically controlled non-reciprocal multif...[2018-05-07]
USTC Microcavity Research Group in the Key Laboratory of Quantum Information have perfected a 4-port all-optically controlled non-reciprocal multifunctional photonic device based on a magnetic-field-free optomechanical resonator is demonstrated for the first time. This achievement was published online in Nature Communications on May 4.Light has bidirectional transmission reciprocity in common diel...
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USTC Realizes the Most Efficient Quantum State Tomography vi...[2018-04-13]
The CAS key lab of quantum information makes a significant progress in the field of quantum metrology. Under the lead of Prof. GUO Guangcan, LI Chuanfeng, XIANG Guoyong and collaborators introduced a general recipe for performing deterministic collective measurements on two identically prepared quantum systems based on quantum walks and achieved the highest efficiency in quantum state tomography. ...
