SCIENCE CHINA Information Sciences, Volume 63 , Issue 8 : 180506(2020) https://doi.org/10.1007/s11432-020-2901-0

Experimental test of Tsirelson's bound with a single photonic qubit

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  • ReceivedFeb 26, 2020
  • AcceptedMay 6, 2020
  • PublishedJul 15, 2020


There is no abstract available for this article.


The work was supported by National Natural Science Foundation of China (Grant Nos. 11804410, 11774436, 11904423), Sun Yat-sen University Core Technology Development Fund, the Key-Area Research and Development Program of GuangDong Province (Grant No. 2019B030330001), Guangdong Province Youth Talent Program (Grant No. 2017GC010656), the Fund of Natural Science Foundation of Guangdong Province (Grant No. 2017A030310452), Guangdong Basic and Applied Basic Research Foundation (Grant No. 2020A1515010864), Sun Yat-sen University Foundation for Youth (Grant No. 17lgpy27), and National Training Programs of Innovation and Entrepreneurship for Undergraduates (Grant No. 201901139). We thank the fruitful discussion from Lorenzo Catani, Luciana Henaut, Shane Mansfield and Anna Pappa.


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  • Figure 1

    (Color online) (a) The scheme of CHSH* game. (b) A 40 mW, 404 nm wavelength continuous-wave laser pumps a type-I phase matching beta-barium-borate (BBO) crystal, and pairs of photons with 808 nm wavelength are generated in SPDC process. One of the photons is detected by the single photon detector as the trigger signal, and the other photon is sent to the CHSH* game modular through a single mode fiber. In the game, the photons are measured with the measurement $M$ after undergoing the controlled operations $A_a$ and $B_b$, then collected by the fiber couplers C0 and C1 and detected by the single-photon detectors D0 and D1. The measurement outcome $c$ is returned to check the winning condition. The details of the ERASE gate is given in the black box. Abbreviations: PBS, polarization beam splitter; Q, quarter wave plate; H, half wave plate; IF, interference filter; Mirr, mirror. (c) Result for the CHSH* game. The optimal success probabilities for the different settings are given in the table. The dots represent the practical winning probabilities in our experiment and the blue line gives a theoretical prediction. The error bars which belong to 0.0017–0.0019, are smaller than the dot size.