Cited 22 time in webofscience Cited 20 time in scopus

Room temperature polariton lasing in quantum heterostructure nanocavities

Title
Room temperature polariton lasing in quantum heterostructure nanocavities
Authors
Kang, Jang-WonSong, BokyungLiu, WenjingPark, Seong-JuAgarwal, RiteshCho, Chang-Hee
DGIST Authors
Kang, Jang-Won; Cho, Chang-Hee
Issue Date
2019-04
Citation
Science Advances, 5(4), eaau9338
Type
Article
Article Type
Article
Keywords
Cryogenic temperaturesExciton polaritonsQuantum heterostructuresQuantum information systemsThermal instabilitiesUltra-low thresholdWide-gap semiconductorPhotonsPhononsQuantum opticsExcitonsHeterojunctionsThermodynamic stabilityWide band gap semiconductorsAll-optical logic gates
ISSN
2375-2548
Abstract
Ultralow-threshold coherent light emitters can be achieved through lasing from exciton-polariton condensates, but this generally requires sophisticated device structures and cryogenic temperatures. Polaritonic nanolasers operating at room temperature lie on the crucial path of related research, not only for the exploration of polariton physics at the nanoscale but also for potential applications in quantum information systems, all-optical logic gates, and ultralow-threshold lasers. However, at present, progress toward room temperature polariton nanolasers has been limited by the thermal instability of excitons and the inherently low quality factors of nanocavities. Here, we demonstrate room temperature polaritonic nanolasers by designing wide-gap semiconductor heterostructure nanocavities to produce thermally stable excitons coupled with nanocavity photons. The resulting mixed states of exciton polaritons with Rabi frequencies of approximately 370 meV enable persistent polariton lasing up to room temperature, facilitating the realization of miniaturized and integrated polariton systems. © 2019 The Authors.
URI
http://hdl.handle.net/20.500.11750/9861
DOI
10.1126/sciadv.aau9338
Publisher
American Association for the Advancement of Science
Related Researcher
  • Author Cho, Chang-Hee Future Semiconductor Nanophotonics Laboratory
  • Research Interests Semiconductor; Nanophotonics; Light-Matter Interaction
Files:
Collection:
Department of Emerging Materials ScienceETC1. Journal Articles
Department of Emerging Materials ScienceFuture Semiconductor Nanophotonics Laboratory1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE