Nonlinear Non-Hermitian Skin Effect and Skin Solitons in Temporal Photonic Feedforward Lattices

2024/09/29 by Shulin Wang, Bing Wang, Wang, Shulin +13 · 7 citations
Engineering · Physics and Astronomy · #Photonic and Optical Devices #Nonlinear Photonic Systems #Optical Network Technologies

paper · pdf · doi:10.48550/arxiv.2409.19693

Abstract

Here we report the experimental demonstration of the nonlinear non-Hermitian skin effect (NHSE) in an effective Kerr nonlinear temporal photonic lattice, where the high-power requirements and lack of tunability intrinsic to optical materials are overcome by an artificial nonlinearity arising from optoelectronic feedforward. Thanks to Kerr self-trapping, the nonlinear NHSE is demonstrated to possess much better localization strength and robustness at the preferred boundary compared to the linear case. Away from the preferred boundary, Kerr self-trapping can even inhibit NHSE-induced transport and form stable skin solitons. Harnessing the nonlinearity-controlled NHSE, we judiciously design an optical router with a flexibly tuned output port. Our findings promise great applications in robust signal transmission, routing, and processing.

Cited by

• Nonlinear skin breathing modes in one-dimensional nonreciprocal mechanical lattices
• Heteronuclear and Homonuclear Vector Solitons in Lasers
• Evolving disorder in non-Hermitian lattices
• Microwave Circulation in an Extended Josephson Junction Ring
• Magnetic Control of the Non-Hermitian Skin Effect in Two-Dimensional Lattices
• Non-Hermitian impurity problem
• Cusp solitons mediated by a topological nonlinearity

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