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. 2022 Oct 24;17(1):59–64. doi: 10.1038/s41566-022-01088-7

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Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Extended Data Fig. 5 — A red alignment laser was used to visualize the beam path from the fibre into the LiNbO₃ waveguide/sample and reflection at a gold mirror. Two micromanipulators were used to contact the subwavelength photoconductor. They were brought into place by viewing their approach to the contact pads by an optical camera recording from the top (the camera is not visible in this picture).