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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

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Extended Data Fig. 10 — The beam profiles of three interferometer arms were measured at the focal plane of the objective on a CMOS detector. The wavelength of 2ω arm results in a single-photon response (SPR), whereas the other two arms produce a two-photon response on the detector given the band gap of silicon. To determine the waist (ω₀), this was considered producing the orange and purple curves for the 2 µm cases.