Observation of a Topological Transition in the Bulk of a Non-Hermitian System
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We present the first experimental observation of a topological transition in a non-Hermitian system. In contrast to standard methods for examining topological properties, which involve probing edge (or surface) states, we monitor the topological transition by employing bulk dynamics only. The system is composed of a lattice of evanescently coupled optical waveguides, and non-Hermitian behavior is engineered by inducing bending loss by spatially "wiggling" every second waveguide.
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The wave function and band modes can be mapped to robust observables in 1D real space.
“The manipulation and manifestation of the wave function and band modes can be appropriately mapped to the robustly certain observables in 1D real space [26, 27].”
From Observing movement of Dirac cones from single-photon dynamics (2021) · cites this paper as [26]
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- Authors
- Zeuner, J. M., Rechtsman, M. C., Plotnik, Y., Lumer, Y., Nolte, S., Rudner, M. S., Segev, M., & Szameit, A.
- Affiliations
- Friedrich Schiller University Jena (DE)
- Pennsylvania State University (US)
- Technion – Israel Institute of Technology (IL)
- ORCID
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2015-07-23
- Volume
- 115
- Issue
- 4
- Pages
- 040402-040402
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1625951388
- Cited by
- 730
- References
- 50
- Citations by year
- 2026: 43 · 2025: 39 · 2024: 59 · 2023: 65 · 2022: 85 · 2021: 89 · 2020: 101 · 2019: 110 · 2018: 65 · 2017: 39 · 2016: 30 · 2015: 4
- FWCI
- 23.38
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- Publikationsdatenbank der Fraunhofer-Gesellschaft (Fraunhofer-Gesellschaft) (submittedVersion)
- Fraunhofer-Publica (Fraunhofer-Gesellschaft) (submittedVersion)
- Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
- Funders
- German Ministry of Education and Research (03Z1HN31)
- Deutsche Forschungsgemeinschaft (NO462/6-1, SZ276/7-1)
- German-Israeli Foundation for Scientific Research and Development (1157-127.14/2011)
- Israel Science Foundation
- Villum Fonden
- Research Executive Agency (PIIF-GA-2013-627838)
- ICORE
- Binational USA-Israel Science Foundation
- European Union’s Seventh Framework Programme (FP7/2007-2013)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Mechanics and Non-Hermitian Physics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Topological Materials and Phenomena
- Physical Sciences › Physics and Astronomy › Acoustics and Ultrasonics › Random lasers and scattering media
- Keywords
- topological phase transition, non-Hermitian systems, bending loss, waveguide arrays, topological photonics
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