We review the recent advances in nonlinear frequency conversion in III-V semiconductor nanoantennas. We demonstrate the control of directionality of emission in the processes of second-harmonic generation, spontaneous parametric down-conversion and nonlinear imaging. © 2020 The Author(s) OCIS codes: (160.3918) Metamaterials; (190.4975) Parametric processes

© 2020 The Author(s)

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