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. A practical method for constructing superoscillations and a discussion of their potential for quantum field theory were given by Achim Kempf. In 2013 experimental generation of arbitrarily shaped diffractionless superoscillatory optical beams has been demonstrated. Kempf and Ferreira proved  that superoscillations come at the expense of a dynamical range that has to increase exponentially with the number of superoscillations and polynomially with the frequency of the superoscillations.
- Berry, M V, 1994, 'Faster than Fourier', in 'Quantum Coherence and Reality; in celebration of the 60th Birthday of Yakir Aharonov' (J S Anandan and J L Safko, eds.) World Scientific, Singapore, pp 55-65.
- Berry, M V & Dennis, M R, 2009, 'Natural superoscillations in monochromatic waves in D dimension'
- A. Kempf, 'Black Holes, Bandwidths and Beethoven', J.Math.Phys. 41, pp. 2360-2374 (2000)
- Greenfield, Elad; Schley, Ran and Hurwitz, Ilan and Nemirovsky, Jonathan and Makris, Konstantinos G and Segev, Mordechai (2013). "Experimental generation of arbitrarily shaped diffractionless superoscillatory optical beams". Optics express 21 (11): 13425–13435. Bibcode:2013OExpr..2113425G. doi:10.1364/oe.21.013425.
- P.J.S.G. Ferreira and A. Kempf. 'Superoscillations: Faster than the Nyquist Rate', in IEEE Transactions on Signal Processing, vol. 54, no. 10, pp. 3732-3740 (2006).
- Laura C Thomson, Yannick Boissel, Graeme Whyte, Eric Yao and Johannes Courtial. Simulation of superresolution holography for optical tweezers
- N.I. Zheludev, 'What diffraction limit?', Nature Materials 7, 420 - 422 (2008)
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