Evolution of Temporal Coherence in Confined Exciton-Polariton Condensates
Loading...
Access rights
openAccess
publishedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Date
Department
Major/Subject
Mcode
Degree programme
Language
en
Pages
6
Series
Physical Review Letters, Volume 120, issue 1
Abstract
We study the influence of spatial confinement on the second-order temporal coherence of the emission from a semiconductor mieroeavity in the strong coupling regime. The confinement, provided by etched micropillars, has a favorable impact on the temporal coherence of solid state quasicondensates that evolve in our device above threshold. By fitting the experimental data with a microscopic quantum theory based on a quantum jump approach, we scrutinize the influence of pump power and confinement and find that phonon-mediated transitions are enhanced in the case of a confined structure, in which the modes split into a discrete set. By increasing the pump power beyond the condensation threshold, temporal coherence significantly improves in devices with increased spatial confinement, as revealed in the transition from thermal to coherent statistics of the emitted light.Description
Other note
Citation
Klaas, M, Flayac, H, Amthor, M, Savenko, I G, Brodbeck, S, Ala-Nissila, T, Klembt, S, Schneider, C & Hoefling, S 2018, 'Evolution of Temporal Coherence in Confined Exciton-Polariton Condensates', Physical Review Letters, vol. 120, no. 1, 017401. https://doi.org/10.1103/PhysRevLett.120.017401