High-speed thin-film lithium niobate quantum processor driven by a solid-state quantum emitter

• URL: http://arxiv.org/abs/2211.05703v1
• Date: Thu, 10 Nov 2022 17:15:08 GMT
• Title: High-speed thin-film lithium niobate quantum processor driven by a solid-state quantum emitter
• Authors: Patrik I. Sund, Emma Lomonte, Stefano Paesani, Ying Wang, Jacques Carolan, Nikolai Bart, Andreas D. Wieck, Arne Ludwig, Leonardo Midolo, Wolfram H. P. Pernice, Peter Lodahl, Francesco Lenzini
• Abstract summary: We develop an integrated photonic platform based on thin-film lithium niobate. We interface it with deterministic solid-state single-photon sources based on quantum dots in nanophotonic waveguides. We realize a variety of key photonic quantum information processing functionalities with the high-speed circuits.
• Score: 2.308881946683637
• License: http://creativecommons.org/licenses/by/4.0/
• 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.

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