superoscillation

English

Etymology

From super- +‎ oscillation.

Pronunciation

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Noun

superoscillation (usually uncountable, plural superoscillations)

  1. The phenomenon by which a globally band-limited signal can contain local segments that oscillate faster than its fastest Fourier components.
    • 2015, Achim Kempf, Angus Prain, “Driving Quantum Systems with Superoscillations”, in arXiv‎[1]:
      We conclude that, either superoscillations really can beat the bandlimit and achieve superresolution (`kinematic superresolution') or the superoscillating high frequency is absorbed and we gain dynamical access to the physics of high frequency processes with low frequency signals (`dynamical superresolution')..
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