Experimental Greenberger-Horne-Zeilinger-Type Six-Photon Quantum Nonlocality.
Experimental Greenberger-Horne-Zeilinger-Type Six-Photon Quantum Nonlocality.
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DOI：
10.1103/physrevlett.115.260402
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发表时间：
2015-12
影响因子：
8.6
通讯作者：
Chao Zhang;Yun-Feng Huang;Zhao Wang;Bi-Heng Liu;Chuan‐Feng Li;G. Guo
中科院分区：
文献类型：
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作者：
Chao Zhang;Yun-Feng Huang;Zhao Wang;Bi-Heng Liu;Chuan‐Feng Li;G. Guo
量子非定域性让我们对量子物理有了更深入的了解。此外，近年来，量子非定域性进一步被认为是与设备无关的量子信息处理的重要资源。大多数非定域性实验都是使用光子系统进行的。然而，到目前为止，非定域性的光子实验最多只涉及四个光子。在这里，我们第一次以高保真(88.4%)六光子Greenberger-Horne-Zeilinger态为基础，以全对零的方式实验演示了六光子量子非定域性。我们的实验将多光子非定域性的研究推进到六光子领域，并可能为与设备无关的量子信息协议提供一个更大的光子系统。
Quantum nonlocality gives us deeper insight into quantum physics. In addition, quantum nonlocality has been further recognized as an essential resource for device-independent quantum information processing in recent years. Most experiments of nonlocality are performed using a photonic system. However, until now, photonic experiments of nonlocality have involved at most four photons. Here, for the first time, we experimentally demonstrate the six-photon quantum nonlocality in an all-versus-nothing manner based on a high-fidelity (88.4%) six-photon Greenberger-Horne-Zeilinger state. Our experiment pushes multiphoton nonlocality studies forward to the six-photon region and might provide a larger photonic system for device-independent quantum information protocols.