Experimental quantum non-Gaussian coincidences of entangled photons
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arXiv
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| Format: | Preprint |
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2023
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| author | 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 |
| author_facet | 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 |
| contents | 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 CHSH-Bell factor $S=2.328\pm0.004$ from a single quantum dot with a depth up to $0.94\pm 0.02$ 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 $8.08\pm0.05$ dB ($19.06\pm0.29$ dB). Our work experimentally certifies the exclusive quantum non-Gaussianity properties highly relevant for optical sensing, communication and computation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_04531 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Experimental quantum non-Gaussian coincidences of entangled photons 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 Quantum Physics 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 CHSH-Bell factor $S=2.328\pm0.004$ from a single quantum dot with a depth up to $0.94\pm 0.02$ 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 $8.08\pm0.05$ dB ($19.06\pm0.29$ dB). Our work experimentally certifies the exclusive quantum non-Gaussianity properties highly relevant for optical sensing, communication and computation. |
| title | Experimental quantum non-Gaussian coincidences of entangled photons |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2307.04531 |