摘要
Direct weak or strong measurement of quantum wave function based on post-selections has been widely explored;however, the efficiency of the measurement is heavily limited by the success probability of post-selection. Here we propose a modified scheme to directly measure photon’s wave function by simply inserting a liquid crystal plate before the postselection stage. Numerical simulations demonstrate that our modified method can significantly increase the efficiency of post selection. Our proposal would speed up the quantum wave function measurement with high resolution and high fidelity.
作者
温永立
张善超
颜辉
朱诗亮
Yong-Li Wen;Shanchao Zhang;Hui Yan;Shi-Liang Zhu(National Laboratory of Solid State Microstructures and School of Physics,Nanjing University,Nanjing 210093,China;Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials,School of Physics and Telecommunication Engineering,South China Normal University,Guangzhou 510006,China;Guangdong-Hong Kong Joint Laboratory of Quantum Matter,Frontier Research Institute for Physics,South China Normal University,Guangzhou 510006,China)
基金
supported by the Key-Area Research and Development Program of Guangdong Province, China (Grant No. 2019B030330001)
the National Natural Science Foundation of China (Grant Nos. 12074180, 11804105,U20A2074, and U1801661)
the Key Project of Science and Technology of Guangzhou (Grant No. 2019050001)
the National Key Research and Development Program of China (Grant No. 2020YFA0309500)
the Natural Science Foundation of Guangdong Province, China (Grant No. 2018A0303130066)。
