摘要
Nonlocal correlations observed from entangled quantum particles imply the existence of intrinsic randomness.Normally, locally projective measurements performed on a two-qubit entangled state can only certify one-bit randomness at most, while non-projective measurement can certify more randomness with the same quantum resources. In this Letter, we carry out an experimental investigation on quantum randomness certification through a symmetric informationally complete positive operator-valued measurement, which in principle can certify the maximum randomness through an entangled qubit. We observe the quantum nonlocal correlations that are close to the theoretical values. In the future, this work can provide a valuable reference for the research on the limit of randomness certification.
作者
刘晨曦
刘琨
汪小润
吴陆颜
李剑
王琴
Chenxi Liu;Kun Liu;Xiaorun Wang;Luyan Wu;Jian Li;Qin Wang(Institute of Quantum Information and Technology,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;Key Laboratory of Broadband Wireless Cormmunication and Sensor Net work Technology,Ministry of Educatic Nanjing University of Posts and Telecommunications,Nanjing 210003,China)
基金
financially supported by the National Key R&D Program of China (Nos. 2018YFA0306400 and 2017YFA0304100)
the National Natural Science Foundation of China (Nos. 11774180 and 61590932)
the Leading-edge Technology Program of Jiangsu Natural Science Foundation (No. BK20192001)
the Postgraduate Research and Practice Innovation Program of Jiangsu Province (No. KYCX18_0915)