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복잡계 이론물리 연구단
복잡계 이론물리 연구단
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Casting dissipative compact states in coherent perfect absorbers

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Title
Casting dissipative compact states in coherent perfect absorbers
Author(s)
C. Danieli; T. Mithun
Publication Date
2020-01
Journal
Physical Review Research, v.2, no.1, pp.013054 -
Publisher
AMERICAN PHYSICAL SOCIETY
Abstract
Coherent perfect absorption (CPA), also known as time-reversed laser, is a wave phenomenon resulting from the reciprocity of destructive interference of transmitted and reflected waves. In this work we consider quasi- one-dimensional lattice networks which posses at least one flat band and show that CPA and lasing can be induced in both linear and nonlinear regimes of this lattice by fine-tuning non-Hermitian defects (dissipative terms localized within one unit-cell). We show that local dissipations that yield CPA simultaneously yield novel dissipative compact solutions of the lattice, whose growth or decay in time can be fine-tuned via the dissipation parameter. The scheme used to numerically visualize the theoretical findings offers a novel platform for the experimental implementation of these phenomena in optical devices. c.Published by the American Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/7039
ISSN
2643-1564
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > Journal Papers (저널논문)
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