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Title: Topology with memory in nonlinear driven-dissipative photonic lattices
Authors: Mandal, Subhaskar
Liu, Gui-Geng
Zhang, Baile
Keywords: Science::Physics::Optics and light
Issue Date: 2023
Source: Mandal, S., Liu, G. & Zhang, B. (2023). Topology with memory in nonlinear driven-dissipative photonic lattices. ACS Photonics, 10(1), 147-154.
Project: NRF-CRP23-2019-0007 
Journal: ACS Photonics 
Abstract: We consider a photonic lattice of nonlinear lossy resonators subjected to a coherent drive, where the system remembers its topological phase. Initially, the system is topologically trivial. After the application of an additional coherent pulse, the intensity is increased, which modifies the couplings in the system and then induces a topological phase transition. However, when the effect of the pulse dies out, the system does not go back to the trivial phase. Instead, it remembers the topological phase and maintains its topology acquired during the pulse application. The pulse can be used as a switch to trigger amplification of the topological modes. We further show that the amplification takes place at a different frequency as well as at a different position from those of the pulse, indicating frequency conversion and intensity transfer. Our work can be useful in triggering the different functionalities of active topological photonic devices.
ISSN: 2330-4022
DOI: 10.1021/acsphotonics.2c01367
DOI (Related Dataset): 10.21979/N9/PNLIXT
Schools: School of Physical and Mathematical Sciences 
Research Centres: Centre for Disruptive Photonic Technologies (CDPT) 
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Photonics, copyright © 2023 American Chemical Society, after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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