We report on a quantum interface linking a diamond NV center quantum network node and 795nm photonic time-bin qubits compatible with Thulium and Rubidium quantum memories. The interface makes use of two-stage low-noise quantum frequency conversion and waveform shaping to match temporal and spectral photon profiles. Two-photon quantum interference shows high indistinguishability of (89.5 ± 1.9)% between converted 795nm photons and the native NV center photons. We use the interface to demonstrate quantum teleportation including real-time feedforward from an unbiased set of 795nm photonic qubit input states to the NV center spin qubit, achieving a teleportation fidelity of (75.5 ± 1.0)%. This proof-of-concept experiment shows the feasibility of interconnecting different quantum network hardware.
Cite
@article{arxiv.2403.18581,
title = {Qubit teleportation between a memory-compatible photonic time-bin qubit and a solid-state quantum network node},
author = {Mariagrazia Iuliano and Marie-Christine Slater and Arian J. Stolk and Matthew J. Weaver and Tanmoy Chakraborty and Elsie Loukiantchenko and Gustavo Castro do Amaral and Nir Alfasi and Mariya O. Sholkina and Wolfgang Tittel and Ronald Hanson},
journal= {arXiv preprint arXiv:2403.18581},
year = {2026}
}