Superoscillation

Superoscillation is a phenomenon in which a signal which is globally band-limited can contain local segments that oscillate faster than its fastest Fourier components. The idea is originally attributed to Yakir Aharonov, and has been made more popularly known through the work of Michael Berry, who also notes that a similar result was known to Ingrid Daubechies[1][2]

Such waveforms are being considered as a possible practical tool for optical engineering applications.[3]

See also

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