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arXiv 2303.09593quant-ph
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利用全光纤平台动态产生光子空间量子态

Dynamic generation of photonic spatial quantum states with an all-fiber platform

A. Alarcón, J. Argillander, D. Spegel-Lexne, G. B. Xavier

摘要:

光子空间量子态在量子通信中的应用是非常感兴趣的课题。一个重要的挑战是如何仅使用光纤组件动态生成这些状态。在这里,我们提出并实验证明了一个全光纤系统,可以动态切换任何一般的横向空间量子比特状态的基础上的线性偏振模式。我们的平台是基于一个快速的光开关的基础上结合了光子灯笼和少模光纤的Sagnac干涉仪。我们展示了5 ns量级的空间模式之间的切换时间,并通过展示基于我们平台的测量设备无关(MDI)量子随机数发生器来展示我们的方案对量子技术的适用性。我们连续运行生成器超过15个小时,获取超过13.46 Gbits的随机数,其中我们确保至少60.52%是私有的,遵循MDI协议。我们的研究结果表明,使用光子灯笼动态创建空间模式,只使用光纤组件,由于其鲁棒性和集成能力,具有重要的后果,光子经典和量子信息处理。

英文摘要:

Photonic spatial quantum states are a subject of great interest for applications in quantum communication. One important challenge has been how to dynamically generate these states using only fiber-optical components. Here we propose and experimentally demonstrate an all-fiber system that can dynamically switch between any general transverse spatial qubit state based on linearly polarized modes. Our platform is based on a fast optical switch based on a Sagnac interferometer combined with a photonic lantern and few-mode optical fibers. We show switching times between spatial modes on the order of 5 ns and demonstrate the applicability of our scheme for quantum technologies by demonstrating a measurement-device-independent (MDI) quantum random number generator based on our platform. We run the generator continuously over 15 hours, acquiring over 13.46 Gbits of random numbers, of which we ensure that at least 60.52% are private, following the MDI protocol. Our results show the use of photonic lanterns to dynamically create spatial modes using only fiber components, which due to their robustness and integration capabilities, have important consequences for photonic classical and quantum information processing.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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