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首页> 外文期刊>Physical Review X >Arbitrarily Loss-Tolerant Einstein-Podolsky-Rosen Steering Allowing a Demonstration over 1?km of Optical Fiber with No Detection Loophole
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Arbitrarily Loss-Tolerant Einstein-Podolsky-Rosen Steering Allowing a Demonstration over 1?km of Optical Fiber with No Detection Loophole

机译:任意容错的爱因斯坦-波多尔斯基-罗森转向系统,可演示超过1公里的光纤,且无检测漏洞

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Demonstrating nonclassical effects over longer and longer distances is essential for both quantum technology and fundamental science. The main challenge is the loss of photons during propagation, because considering only those cases where photons are detected opens a “detection loophole” in security whenever parties or devices are untrusted. Einstein-Podolsky-Rosen steering is equivalent to an entanglement-verification task in which one party (device) is untrusted. We derive arbitrarily loss-tolerant tests, enabling us to perform a detection-loophole-free demonstration of Einstein-Podolsky-Rosen steering with parties separated by a coiled 1-km-long optical fiber, with a total loss of 8.9?dB (87%).
机译:在越来越长的距离内证明非经典效应对于量子技术和基础科学都至关重要。主要挑战是传播过程中光子的丢失,因为仅考虑那些检测到光子的情况会在不信任各方或设备时打开安全性的“检测漏洞”。爱因斯坦-波多尔斯基-罗森(Einstein-Podolsky-Rosen)操纵等效于一个纠缠验证任务,其中一方(设备)不受信任。我们进行了任意的损耗容限测试,使我们能够对爱因斯坦-波多尔斯基-罗森转向进行无检测漏洞的演示,其中各方之间被盘绕的1公里长的光纤隔开,总损耗为8.9?dB(87 %)。

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