标题： 使用高效超导纳米线单光子探测器在100公里光纤上的量子隐形传态 显示英文标题

标题： Quantum teleportation over 100 km of fiber using highly-efficient superconducting nanowire single photon detectors

摘要： 量子隐形传态是一种基本的量子操作，通过量子纠缠和经典通信的帮助，我们可以将一个未知的量子态传输到远程位置。 自从首次使用光子量子比特和连续变量进行实验演示以来，自由空间信道上的光子量子隐形传态距离持续增加，并已达到超过100公里。 另一方面，光纤上的量子隐形传态具有挑战性，主要是因为量子隐形传态实验不可避免地伴随的多光子探测，在典型的电信波段单光子探测器相对较低的探测效率下非常低效。 在此，我们报告了使用基于MoSi的四个高探测效率超导纳米线超导单光子探测器（SNSPD）在光纤上实现的高效量子隐形传态。 这些SNSPD使得高效率的多光子测量成为可能，使我们能够确认输入光子的量子态成功地在100公里的光纤上传输。 显示英文摘要

摘要： Quantum teleportation is an essential quantum operation by which we can transfer an unknown quantum state to a remote location with the help of quantum entanglement and classical communication. Since the first experimental demonstrations using photonic qubits and continuous variables, the distance of photonic quantum teleportation over free space channels has continued to increase and has reached >100 km. On the other hand, quantum teleportation over optical fiber has been challenging, mainly because the multi-fold photon detection that inevitably accompanies quantum teleportation experiments has been very inefficient due to the relatively low detection efficiencies of typical telecom-band single photon detectors. Here, we report efficient quantum teleportation over optical fiber using four high-detection efficiency superconducting nanowire superconducting single-photon detectors (SNSPD) based on MoSi. These SNSPDs make it possible to perform highly-efficient multi-fold photon measurements, allowing us to confirm that the quantum states of input photons were successfully teleported over 100 km of fiber.