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Increasing the efficiency of post-selection in direct measurement of the quantum wave function |
| Yong-Li Wen(温永立)1, Shanchao Zhang(张善超)2,3, Hui Yan(颜辉)2,3, and Shi-Liang Zhu(朱诗亮)2,3,† |
1 National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, China;
2 Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China;
3 Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Frontier Research Institute for Physics, South China Normal University, Guangzhou 510006, China |
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Abstract 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 post-selection 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.
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Received: 10 June 2021
Revised: 11 July 2021
Accepted manuscript online: 19 August 2021
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PACS:
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42.50.Dv
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(Quantum state engineering and measurements)
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Corresponding Authors:
Shi-Liang Zhu
E-mail: slzhu@nju.edu.cn
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Cite this article:
Yong-Li Wen(温永立), Shanchao Zhang(张善超), Hui Yan(颜辉), and Shi-Liang Zhu(朱诗亮) Increasing the efficiency of post-selection in direct measurement of the quantum wave function 2022 Chin. Phys. B 31 034206
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