Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session H15: 2D Materials (Semiconductors) -- Optical Properties II
2:30 PM–5:30 PM,
Tuesday, March 5, 2019
BCEC
Room: 154
Sponsoring
Units:
DMP DCOMP
Chair: Hiroshi Idzuchi
Abstract: H15.00013 : Room-Temperature Valley Coherence in a Polaritonic System*
4:54 PM–5:06 PM
Presenter:
Liangyu Qiu
(University of Rochester)
Authors:
Liangyu Qiu
(University of Rochester)
Chitraleema Chakraborty
(University of Rochester)
Sajal Dhara
(University of Rochester)
Nick Vamivakas
(University of Rochester)
of valley-resolved exciton and helicity-resolved photon mode, the valley DOF will be inherited by half-light, half-matter polaritons. Here, we demonstrate non-vanishing valley coherence of exciton-polaritons at room temperature in a cavity-embedded monolayer Tungsten Diselenide. The extra decay path through the exciton-cavity coupling, which is free of decoherence, is the key for intervalley phase correlation. These observations pave the way for room temperature valleytronic devices.
*Air Force Office of Scientific Research (AFOSR)
Materials Research Science and Engineering Centers (MRSEC)
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