Observation of Linear and Nonlinear Light Localization at the Edges of Moiré Arrays

A. A. Arkhipova, Y. V. Kartashov, S. K. Ivanov, S. A. Zhuravitskii, N. N. Skryabin, I. V. Dyakonov, A. A. Kalinkin, S. P. Kulik, V. O. Kompanets, S. V. Chekalin, F. Ye, V. V. Konotop, L. Torner, and V. N. Zadkov
Phys. Rev. Lett. 130, 083801 – Published 21 February 2023
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    Abstract

    We observe linear and nonlinear light localization at the edges and in the corners of truncated moiré arrays created by the superposition of periodic mutually twisted at Pythagorean angles square sublattices. Experimentally exciting corner linear modes in the femtosecond-laser written moiré arrays we find drastic differences in their localization properties in comparison with the bulk excitations. We also address the impact of nonlinearity on the corner and bulk modes and experimentally observe the crossover from linear quasilocalized states to the surface solitons emerging at the higher input powers. Our results constitute the first experimental demonstration of localization phenomena induced by truncation of periodic moiré structures in photonic systems.

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    • Received 10 August 2022
    • Accepted 3 January 2023
    • Corrected 28 March 2023

    DOI:https://doi.org/10.1103/PhysRevLett.130.083801

    © 2023 American Physical Society

    Physics Subject Headings (PhySH)

    1. Research Areas
    Edge statesWaveguide arrays
    1. Physical Systems
    Solitons
    Atomic, Molecular & OpticalNonlinear Dynamics

    Corrections

    28 March 2023

    Correction: The omission of a support statement in the Acknowledgments section has been fixed.

    Authors & Affiliations

    A. A. Arkhipova1,2, Y. V. Kartashov1,*, S. K. Ivanov3, S. A. Zhuravitskii1,4, N. N. Skryabin1,4, I. V. Dyakonov4, A. A. Kalinkin1,4, S. P. Kulik4, V. O. Kompanets1, S. V. Chekalin1, F. Ye5,†, V. V. Konotop6, L. Torner3,7, and V. N. Zadkov1,2

    • 1Institute of Spectroscopy, Russian Academy of Sciences, 108840 Troitsk, Moscow, Russia
    • 2Faculty of Physics, Higher School of Economics, 105066 Moscow, Russia
    • 3ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain
    • 4Quantum Technology Centre, Faculty of Physics, M. V. Lomonosov Moscow State University, 119991 Moscow, Russia
    • 5School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
    • 6Departamento de Física and Centro de Física Teórica e Computacional, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Ed. C8, Lisboa 1749-016, Portugal
    • 7Universitat Politecnica de Catalunya, 08034, Barcelona, Spain

    • *kartashov@isan.troitsk.ru
    • †fangweiye@sjtu.edu.cn

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    Issue

    Vol. 130, Iss. 8 — 24 February 2023

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