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.
@article{arxiv.2007.11157,
title = {Teleportation Systems Towards a Quantum Internet},
author = {Raju Valivarthi and Samantha Davis and Cristian Pena and Si Xie and Nikolai Lauk and Lautaro Narvaez and Jason P. Allmaras and Andrew D. Beyer and Yewon Gim and Meraj Hussein and George Iskander and Hyunseong Linus Kim and Boris Korzh and Andrew Mueller and Mandy Rominsky and Matthew Shaw and Dawn Tang and Emma E. Wollman and Christoph Simon and Panagiotis Spentzouris and Neil Sinclair and Daniel Oblak and Maria Spiropulu},
journal= {arXiv preprint arXiv:2007.11157},
year = {2021}
}
Comments
15 pages, 7 Figures ; fixed typos on affiliation of Christoph Simon (Calgary)