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    Experimental Demonstration of Quantum Pseudotelepathy

    Jia-Min Xu1,2, Yi-Zheng Zhen1,2, Yu-Xiang Yang3,4, Zi-Mo Cheng3,4, Zhi-Cheng Ren3,4, Kai Chen1,2,*, Xi-Lin Wang3,4,†, and Hui-Tian Wang3,4,‡

    • 1Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China
    • 2CAS Centre for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
    • 3National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093, China
    • 4Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China

    • *Corresponding author. kaichen@ustc.edu.cn
    • †Corresponding author. xilinwang@nju.edu.cn
    • ‡Corresponding author. htwang@nju.edu.cn
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    Phys. Rev. Lett. 129, 050402 – Published 26 July, 2022

    DOI: https://doi.org/10.1103/PhysRevLett.129.050402

    Abstract

    Quantum pseudotelepathy is a strong form of nonlocality. Different from the conventional nonlocal games where quantum strategies win statistically, e.g., the Clauser-Horne-Shimony-Holt game, quantum pseudotelepathy in principle allows quantum players to with probability 1. In this Letter, we report a faithful experimental demonstration of quantum pseudotelepathy via playing the nonlocal version of Mermin-Peres magic square game, where Alice and Bob cooperatively fill in a 3×3 magic square. We adopt the hyperentanglement scheme and prepare photon pairs entangled in both the polarization and the orbital angular momentum degrees of freedom, such that the experiment is carried out in a resource-efficient manner. Under the locality and fair-sampling assumption, our results show that quantum players can simultaneously win all the queries over any classical strategy.

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    Phys. Rev. Lett. 129, 050402– Published 26 July, 2022
    • Received 8 February 2021
    • Revised 29 April 2022
    • Accepted 23 June 2022
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