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Room temperature polariton lasing in quantum heterostructure nanocavities

Title
Room temperature polariton lasing in quantum heterostructure nanocavities
Authors
Cho, Chang-Hee
DGIST Authors
Cho, Chang-Hee
Issue Date
2020-02-11
Citation
제 58회 한국진공학회 동계정기학술대회
Type
Conference
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.
URI
http://hdl.handle.net/20.500.11750/14064
Publisher
한국진공학회
Related Researcher
  • Author Cho, Chang-Hee Future Semiconductor Nanophotonics Laboratory
  • Research Interests Semiconductor; Nanophotonics; Light-Matter Interaction
Files:
There are no files associated with this item.
Collection:
Department of Physics and ChemistryFuture Semiconductor Nanophotonics Laboratory2. Conference Papers


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