High-speed thin-film lithium niobate quantum processor driven by a solid-state quantum emitter
Abstract
Scalable photonic quantum computing architectures pose stringent requirements on photonic processing devices. The need for low-loss high-speed reconfigurable circuits and near-deterministic resource state generators are some of the most challenging requirements. Here we develop an integrated photonic platform based on thin-film lithium niobate and interface it with deterministic solid-state single-photon sources based on quantum dots in nanophotonic waveguides. The generated photons are processed with low-loss circuits programmable at speeds of several GHz. We realize a variety of key photonic quantum information processing functionalities with the high-speed circuits, including on-chip quantum interference, photon demultiplexing, and reprogrammability of a four-mode universal photonic circuit. These results show a promising path forward for scalable photonic quantum technologies by merging integrated photonics with solid-state deterministic photon sources in a heterogeneous approach to scaling up.
Cite
@article{arxiv.2211.05703,
title = {High-speed thin-film lithium niobate quantum processor driven by a solid-state quantum emitter},
author = {Patrik I. Sund and Emma Lomonte and Stefano Paesani and Ying Wang and Jacques Carolan and Nikolai Bart and Andreas D. Wieck and Arne Ludwig and Leonardo Midolo and Wolfram H. P. Pernice and Peter Lodahl and Francesco Lenzini},
journal= {arXiv preprint arXiv:2211.05703},
year = {2022}
}