Non-Hermitian synthetic lattices with light-matter coupling

Autor:	Rahmani, Amir, Kędziora, Mateusz, Opala, Andrzej, Matuszewski, Michał
Rok vydání:	2022
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Physics - Optics
Zdroj:	Phys. Rev. B 107, 165309 (2023)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.107.165309
Popis:	We propose that light-matter coupling can be used to realize synthetic lattices. In particular, we consider a one-dimensional chain of exciton-photon sites to create a comb lattice that exhibits a transition from a flat band to a finite mass dispersion by tuning site-dependent light-matter coupling. Moreover, in a non-Hermitian system with gain and loss, the flat band phase is much more robust and the transition is accompanied by the appearance of exceptional points in the complex energy spectrum. We demonstrate that by engineering the light-matter coupling in the synthetic lattice, one can explore various phases in the lasing regime. Our proposal paves the way for studying non-Hermitian systems in higher dimensions. Comment: 8 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2212.04217 Zobrazit plný text záznamu View this record from Arxiv