Researchers reveal an effect in random media, called coherent back-emission, in which directional memory of the incoming light field persists after incident radiation ceases to be present.
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Scheffold, F., Froufe-Pérez, L.S. The show must go on. Nat. Photon. 16, 92–93 (2022). https://doi.org/10.1038/s41566-021-00949-x
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DOI: https://doi.org/10.1038/s41566-021-00949-x
