论文标题
传送系统通往量子互联网
Teleportation Systems Towards a Quantum Internet
论文作者
论文摘要
量子传送对于包括长距离量子网络在内的许多量子信息技术至关重要。使用光纤耦合的设备，包括最先进的低噪声超导纳米式单光子探测器和现成的光学元件，我们在1536.5 nm的电信波长下实现了量子封态量子的量子传送。我们测量> = 90％的传送保真度与系统的分析模型一致，该模型包括现实的缺陷。为了证明我们的设置与已部署的量子网络的兼容性，我们在22 km的单模光纤上传送量子位，同时在另外22公里的光纤上传输Qubits。我们的系统与新兴的固态量子设备兼容，为具有实用设备的高保真量子互联网提供了现实的基础。
Quantum teleportation is essential for many quantum information technologies including long-distance quantum networks. Using fiber-coupled devices, including state-of-the-art low-noise superconducting nanowire single photon detectors and off-the-shelf optics, we achieve quantum teleportation of time-bin qubits at the telecommunication wavelength of 1536.5 nm. We measure teleportation fidelities of >=90% that are consistent with an analytical model of our system, which includes realistic imperfections. To demonstrate the compatibility of our setup with deployed quantum networks, we teleport qubits over 22 km of single-mode fiber while transmitting qubits over an additional 22 km of fiber. Our systems, which are compatible with emerging solid-state quantum devices, provide a realistic foundation for a high-fidelity quantum internet with practical devices.
