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- W4384918498 abstract "Quasicrystals, a fascinating class of materials with long-range but nonperiodic order, have revolutionized our understanding of solid-state physics due to their unique properties at the crossroads of long-range-ordered and disordered systems. Since their discovery, they continue to spark broad interest for their structural and electronic properties. The quantum simulation of quasicrystals in synthetic quantum matter systems offers a unique playground to investigate these systems with unprecedented control parameters. Here, we investigate the localization properties and spectral structure of quantum particles in 2D quasicrystalline optical potentials. While states are generally localized at low energy and extended at high energy, we find alternating localized and critical states at intermediate energies. Moreover, we identify a complex succession of gaps in the energy spectrum. We show that the most prominent gap arises from strongly localized ring states, with the gap width determined by the energy splitting between states with different quantized winding numbers. In addition, we find that these gaps are stable for quasicrystals with different rotational symmetries and potential depths, provided that other localized states do not enter the gap generated by the ring states. Our findings shed light on the unique properties of quantum quasicrystals and have implications for their many-body counterparts." @default.
- W4384918498 created "2023-07-21" @default.
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- W4384918498 date "2023-07-18" @default.
- W4384918498 modified "2023-09-27" @default.
- W4384918498 title "Localization and spectral structure in two-dimensional quasicrystal potentials" @default.
- W4384918498 doi "https://doi.org/10.48550/arxiv.2307.09527" @default.
- W4384918498 hasPublicationYear "2023" @default.
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