RT Journal Article
SR Electronic
T1 Room temperature long-range coherent exciton polariton condensate flow in lead halide perovskites
JF Science Advances
JO Sci Adv
FD American Association for the Advancement of Science
SP eaau0244
DO 10.1126/sciadv.aau0244
VO 4
IS 10
A1 Su, Rui
A1 Wang, Jun
A1 Zhao, Jiaxin
A1 Xing, Jun
A1 Zhao, Weijie
A1 Diederichs, Carole
A1 Liew, Timothy C. H.
A1 Xiong, Qihua
YR 2018
UL http://advances.sciencemag.org/content/4/10/eaau0244.abstract
AB Novel technological applications significantly favor alternatives to electrons toward constructing low power–consuming, high-speed all-optical integrated optoelectronic devices. Polariton condensates, exhibiting high-speed coherent propagation and spin-based behavior, attract considerable interest for implementing the basic elements of integrated optoelectronic devices: switching, transport, and logic. However, the implementation of this coherent polariton condensate flow is typically limited to cryogenic temperatures, constrained by small exciton binding energy in most semiconductor microcavities. Here, we demonstrate the capability of long-range nonresonantly excited polariton condensate flow at room temperature in a one-dimensional all-inorganic cesium lead bromide (CsPbBr3) perovskite microwire microcavity. The polariton condensate exhibits high-speed propagation over macroscopic distances of 60 μm while still preserving the long-range off-diagonal order. Our findings pave the way for using coherent polariton condensate flow for all-optical integrated logic circuits and polaritonic devices operating at room temperature.