Stability of topologically protected edge states in nonlinear fiber loops
Bisianov A, Wimmer M, Peschel U, Egorov OA (2019)
Publication Type: Journal article
Publication year: 2019
Journal
Book Volume: 100
Article Number: 063830
Journal Issue: 6
DOI: 10.1103/PhysRevA.100.063830
Abstract
We study both theoretically and experimentally the existence and stability of symmetry-protected topological chiral edge states in an all-photonic system mimicking Floquet dynamics of a discrete one-dimensional quantum walk in the presence of Kerr nonlinearity. The system is realized via time multiplexing as two fiber loops of slightly different lengths with a dynamically variable coupling strength. We prove that topological edge states persist in the nonlinear regime for moderate intensities, despite chiral symmetry breaking. Above a certain power threshold, they undergo destabilization, resulting in the radiation into the bulk modes. Finally, we show that the nonlinear interaction with bulk modes can serve as an effective pumping of the topological edge states.
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Germany (DE)How to cite
APA:
Bisianov, A., Wimmer, M., Peschel, U., & Egorov, O.A. (2019). Stability of topologically protected edge states in nonlinear fiber loops. Physical Review A, 100(6). https://doi.org/10.1103/PhysRevA.100.063830
MLA:
Bisianov, Arstan, et al. "Stability of topologically protected edge states in nonlinear fiber loops." Physical Review A 100.6 (2019).
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