Phys.org December 29, 2020
An international team of researchers (USA – Caltech, Fermi National Accelerator Laboratory, industry, Harvard University, Canada) used fiber-coupled devices, including state-of-the-art low-noise superconducting nanowire single-photon detectors and off-the-shelf optics to achieve conditional quantum teleportation of time-bin qubits at the telecommunication wavelength of 1536.5 nm. They measured teleportation fidelities that are consistent with an analytical model of their system, which includes realistic imperfections. To demonstrate the compatibility of the setup with deployed quantum networks, they teleported qubits over 22 km of single-mode fiber while transmitting qubits over an additional 22 km of fiber. Their systems, which are compatible with the emerging solid-state quantum devices, provide a realistic foundation for a high-fidelity quantum Internet with practical devices…read more. Open Access TECHNICAL ARTICLE
In a demonstration of high-fidelity quantum teleportation at the Fermilab Quantum Network, fiber-optic cables connect off-the-shelf devices as well as state-of-the-art R&D devices. Credit: Fermilab