Phase-space optics is an indispensable tool for optical imaging and sensing. New optical hardware for light-field photography and pupil engineering for imaging with extended depth of field promote the use of phase-space representations as the primary object of optical signal processing.
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Testorf, M. Musical score for optical signals. Nature Photon 6, 416–418 (2012). https://doi.org/10.1038/nphoton.2012.152
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DOI: https://doi.org/10.1038/nphoton.2012.152