Information thermodynamics offers a route to measure how effectively a light-driven molecular machine converts energy from absorbed photons into pumped motion.
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The author declares no competing interests.
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Gingrich, T.R. Measuring how effectively light drives a molecular pump. Nat. Nanotechnol. 17, 675–676 (2022). https://doi.org/10.1038/s41565-022-01152-x