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Publication - Professor Sir Michael Berry

    Roadmap on superoscillations

    Citation

    Berry, M, Zheludev, N, Aharonov, Y, Colombo, F, Sabadini, I, Struppa, DC, Tollaksen, J, Rogers, ET, Qin, F, Hong, M, Luo, X, Remez, R, Arie, A, Götte, JB, Dennis, MR, Wong, AM, Eleftheriades, GV, Eliezer, Y, Bahabad, A, Chen, G, Wen, Z, Liang, G, Hao, C, Qiu, CW, Kempf, A, Katzav, E & Schwartz, M, 2019, ‘Roadmap on superoscillations’. Journal of Optics (United Kingdom), vol 21.

    Abstract

    Superoscillations are band-limited functions with the counterintuitive property that they can vary arbitrarily faster than their fastest Fourier component, over arbitrarily long intervals. Modern studies originated in quantum theory, but there were anticipations in radar and optics. The mathematical understanding - still being explored - recognises that functions are extremely small where they superoscillate; this has implications for information theory. Applications to optical vortices, sub-wavelength microscopy and related areas of nanoscience are now moving from the theoretical and the demonstrative to the practical. This Roadmap surveys all these areas, providing background, current research, and anticipating future developments.

    Full details in the University publications repository