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. 2024 Apr 15;628(8009):752–757. doi: 10.1038/s41586-024-07244-z

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© This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2024

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Extended Data Fig. 6 — The acronyms of the components have the following meaning: WP, Wollaston prism; F1, long pass filter; F2, short pass filter; F3, l ong pass filter; PD, photodiode; TIA, trans-impedance amplifier; BS, beam splitter; DBS, dichroic beam splitter; Pol., polarizer; WeP, wedged pair; CM, chirped mirrors; SHG, second harmonic generation LiNbO₃ crystal; CW, continuous wave laser; LIA, lock-in amplifier. A detailed description of the setup is provided in the text.