Wave manipulation via delay-engineered periodic potentials

• URL: http://arxiv.org/abs/2207.13474v1
• Date: Wed, 27 Jul 2022 11:45:32 GMT
• Title: Wave manipulation via delay-engineered periodic potentials
• Authors: Alessandro Alberucci and Chandroth P. Jisha and Monika Monika and Ulf Peschel and Stefan Nolte
• Abstract summary: We discuss the semi-classical transverse trapping of waves by means of an inhomogeneous gauge field. We show that, due to the Kapitza effect, an effective potential proportional to the square of the transverse derivative of the delay arises.
• Score: 55.41644538483948
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We discuss the semi-classical transverse trapping of waves by means of an inhomogeneous gauge field. In the proposed scheme a temporally-periodic perturbation is shifted in time, the imparted delay being dependent on the transverse direction. We show that, due to the Kapitza effect, an effective potential proportional to the square of the transverse derivative of the delay arises. On a more physical ground, the delay induces a transversely-varying periodic force acting on the wave, in turn providing a phase delay owing to the local modulation of the kinetic energy. Our results are quite generic and can find application in several fields, ranging from cold atoms to optics: accordingly, an experimental proof-of-principle is provided using an optical set-up based upon fiber loops.

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