Experimental Quantum Non-Gaussian Coincidences of Entangled Photons.
作者信息
Liu Run-Ze, Qiao Yu-Kun, Lachman Lukáš, Ge Zhen-Xuan, Chung Tung-Hsun, Zhao Jun-Yi, Li Hao, You Lixing, Filip Radim, Huo Yong-Heng
机构信息
Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China.
Shanghai Research Center for Quantum Science and CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Shanghai 201315, China.
出版信息
Phys Rev Lett. 2024 Feb 23;132(8):083601. doi: 10.1103/PhysRevLett.132.083601.
Quantum non-Gaussianity, a more potent and highly useful form of nonclassicality, excludes all convex mixtures of Gaussian states and Gaussian parametric processes generating them. Here, for the first time, we conclusively test quantum non-Gaussian coincidences of entangled photon pairs with the Clauser-Horne-Shimony-Holt-Bell factor S=2.328±0.004 from a single quantum dot with a depth up to 0.94±0.02 dB. Such deterministically generated photon pairs fundamentally overcome parametric processes by reducing crucial multiphoton errors. For the quantum non-Gaussian depth of the unheralded (heralded) single-photon state, we achieve the value of 8.08±0.05 dB (19.06±0.29 dB). Our Letter experimentally certifies the exclusive quantum non-Gaussianity properties highly relevant for optical sensing, communication, and computation.
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