Localization and mobility edges in non-Hermitian continuous quasiperiodic systems
Sign Up to like & getrecommendations! Published in 2024 at "New Journal of Physics"
DOI: 10.1088/1367-2630/adf56f
Abstract: The mobility edge (ME) is a critical concept in Anderson localized systems, which marks the boundary between extended and localized states. Although the ME and localization phenomena have been extensively investigated in non-Hermitian (NH) quasiperiodic… read more here.
Keywords: edges non; localization mobility; non hermitian; localization ... See more keywords
Mobility edges and fractal states in quasiperiodic Gross-Pitaevskii chains
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DOI: 10.1103/d9sb-lj4k
Abstract: We explore properties of a Gross-Pitaevskii chain subject to an incommensurate periodic potential, i.e., a nonlinear Aubry-Andre model. We show that the condensate crucially impacts the properties of the elementary excitations. In contrast to the… read more here.
Keywords: gross pitaevskii; fractal states; mobility edges; edges fractal ... See more keywords
Dimerization-induced mobility edges and multiple reentrant localization transitions in non-Hermitian quasicrystals
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review B"
DOI: 10.1103/physrevb.105.054204
Abstract: Non-Hermitian effects could create rich dynamical and topological phase structures. In this work, we show that the collaboration between lattice dimerization and non-Hermiticity could generally bring about mobility edges and multiple localization transitions in one-dimensional… read more here.
Keywords: mobility edges; non hermitian; dimerization; localization transitions ... See more keywords
Emergent multiloop nested point gap in a non-Hermitian quasiperiodic lattice
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DOI: 10.1103/physrevb.111.104204
Abstract: We propose a geometric series modulated non-Hermitian quasiperiodic lattice model, and explore its localization and topological properties. The results show that with the ever-increasing summation terms of the geometric series, multiple mobility edges and non-Hermitian… read more here.
Keywords: winding number; quasiperiodic lattice; point; hermitian quasiperiodic ... See more keywords
Dephasing-Induced Mobility Edges in Quasicrystals.
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DOI: 10.1103/physrevlett.132.236301
Abstract: Mobility edges (ME), separating Anderson-localized states from extended states, are known to arise in the single-particle energy spectrum of certain one-dimensional lattices with aperiodic order. Dephasing and decoherence effects are widely acknowledged to spoil Anderson… read more here.
Keywords: induced mobility; mobility; dephasing induced; localization ... See more keywords
Non-Hermitian topological mobility edges and transport in photonic quantum walks.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.460484
Abstract: In non-Hermitian quasicrystals, mobility edges (ME) separating localized and extended states in the complex energy plane can arise as a result of non-Hermitian terms in the Hamiltonian. Such ME are of topological nature, i.e., the… read more here.
Keywords: photonic quantum; quantum walks; non hermitian; mobility edges ... See more keywords