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- Publisher Website: 10.1103/PhysRevB.108.L220301
- Scopus: eid_2-s2.0-85179761389
- WOS: WOS:001141592700003
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Article: Loss-induced Floquet non-Hermitian skin effect
Title | Loss-induced Floquet non-Hermitian skin effect |
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Authors | |
Issue Date | 12-Dec-2023 |
Publisher | American Physical Society |
Citation | Physical Review B, 2023, v. 108, n. 22, p. 1-6 How to Cite? |
Abstract | Non-Hermitian topological systems have attracted much interest due to their unique topological properties when the non-Hermitian skin effect (NHSE) appears. However, the experimental realization of NHSE conventionally requires nonreciprocal couplings, which are compatible with limited systems. Here, we propose a mechanism of loss-induced Floquet NHSE, where the loss provides the basic source of non-Hermicity and the Floquet engineering brings about Floquet-induced complex next-nearest-neighbor couplings. We also extend the generalized Brillouin zone theory to nonequilibrium systems to describe the Floquet NHSE. Furthermore, we show that this mechanism can realize the second-order NHSE when generalized to two-dimensional systems. Our proposal can be realized in photonic lattices with helical waveguides and other related systems, which opens the door for the study of topological phases in Floquet non-Hermitian systems. |
Persistent Identifier | http://hdl.handle.net/10722/339954 |
ISSN | 2021 Impact Factor: 3.908 2020 SCImago Journal Rankings: 1.780 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Li, YH | - |
dc.contributor.author | Lu, CC | - |
dc.contributor.author | Zhang, S | - |
dc.date.accessioned | 2024-03-11T10:40:34Z | - |
dc.date.available | 2024-03-11T10:40:34Z | - |
dc.date.issued | 2023-12-12 | - |
dc.identifier.citation | Physical Review B, 2023, v. 108, n. 22, p. 1-6 | - |
dc.identifier.issn | 2469-9950 | - |
dc.identifier.uri | http://hdl.handle.net/10722/339954 | - |
dc.description.abstract | Non-Hermitian topological systems have attracted much interest due to their unique topological properties when the non-Hermitian skin effect (NHSE) appears. However, the experimental realization of NHSE conventionally requires nonreciprocal couplings, which are compatible with limited systems. Here, we propose a mechanism of loss-induced Floquet NHSE, where the loss provides the basic source of non-Hermicity and the Floquet engineering brings about Floquet-induced complex next-nearest-neighbor couplings. We also extend the generalized Brillouin zone theory to nonequilibrium systems to describe the Floquet NHSE. Furthermore, we show that this mechanism can realize the second-order NHSE when generalized to two-dimensional systems. Our proposal can be realized in photonic lattices with helical waveguides and other related systems, which opens the door for the study of topological phases in Floquet non-Hermitian systems. | - |
dc.language | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.ispartof | Physical Review B | - |
dc.title | Loss-induced Floquet non-Hermitian skin effect | - |
dc.type | Article | - |
dc.identifier.doi | 10.1103/PhysRevB.108.L220301 | - |
dc.identifier.scopus | eid_2-s2.0-85179761389 | - |
dc.identifier.volume | 108 | - |
dc.identifier.issue | 22 | - |
dc.identifier.spage | 1 | - |
dc.identifier.epage | 6 | - |
dc.identifier.eissn | 2469-9969 | - |
dc.identifier.isi | WOS:001141592700003 | - |
dc.publisher.place | COLLEGE PK | - |
dc.identifier.issnl | 2469-9950 | - |