Article (Scientific journals)
From hybrid polariton to dipolariton using non-Hermitian Hamiltonians to handle particle lifetimes
CHENU, Aurélia; Shiau, Shiue-Yuan; Chien, Ching-Hang et al.
2022In Physical Review. B, Condensed Matter
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Abstract :
[en] We consider photons strongly coupled to the excitonic excitations of a coupled quantum well, in the presence of an electric field. We show how, under a field increase, the hybrid polariton made of a photon coupled to hybrid carriers lying in the two wells transforms into a dipolariton made of a photon coupled to direct and indirect excitons. We also show how the cavity photon lifetime and the coherence time of the carrier wave vectors that we analytically handle through non-hermitian Hamiltonians affect these polaritonic states. While the hybrid polaritons display a spectral singularity where the eigenvalues coalesce, known as an exceptional point, that depends on detuning and lifetimes, we find that the three dipolaritonic states display an anticrossing without exceptional point due to the interaction between photons, direct, and indirect excitons.
Disciplines :
Physics
Author, co-author :
CHENU, Aurélia ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
Shiau, Shiue-Yuan
Chien, Ching-Hang
Combescot, Monique
External co-authors :
yes
Language :
English
Title :
From hybrid polariton to dipolariton using non-Hermitian Hamiltonians to handle particle lifetimes
Publication date :
January 2022
Journal title :
Physical Review. B, Condensed Matter
ISSN :
1095-3795
Publisher :
American Physical Society, New York, United States - Maryland
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 04 January 2022

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