Biophysics, Plenary Lecture

NONLINEAR METASURFACES

Ildar Gabitov, Skolkovo Institute of Science and Technology, Russia

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ABSTRACT

Progress of recent years in the development of high performance electronic device faces a number of fundamental limitations. These limitations motivate the transition from electronics to photonics technologies using photons instead of electrons. However, such transition encounters a set of serious challenges. In particular, photons, unlike electrons are neutral which leads to the problem of an effective light control. In addition, the "size" of the photon is limited to its wavelength which creates an obstacle on the way to high integration level of photonic circuits. We present theoretical analysis of ultra-thin metasurfaces based on 2D array of superconducting fr-SQUIDs, which are able to control key properties of the light scattering. We show that the scattering type changes for large amplitudes of the incident electromagnetic wave; there are two different refraction states if amplitude of the incident field is above critical value. The transmitted wave polarization and angle of refraction are different for these two states. Such scattering bistability allows switching the propagation direction of electromagnetic wave and its polarization by means of a "thin film", whose thickness is much smaller than the wavelength.

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Prof. Ildar Gabitov

Skolkovo Institute of Science and Technology
Russia

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