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Title: Room temperature long-range coherent exciton polariton condensate flow in lead halide perovskites
Authors: Su, Rui
Wang, Jun
Zhao, Jiaxin
Xing, Jun
Zhao, Weijie
Diederichs, Carole
Xiong, Qihua
Liew, Timothy Chi Hin
Keywords: Polariton Condensates
Exciton Polariton
Issue Date: 2018
Source: Su, R., Wang, J., Zhao, J., Xing, J., Zhao, W., Diederichs, C., . . . Xiong, Q. (2018). Room temperature long-range coherent exciton polariton condensate flow in lead halide perovskites. Science Advances, 4(10), eaau0244-. doi:10.1126/sciadv.aau0244
Series/Report no.: Science Advances
Abstract: 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.
DOI: 10.1126/sciadv.aau0244
DOI (Related Dataset):
Schools: School of Electrical and Electronic Engineering 
School of Physical and Mathematical Sciences 
Organisations: MajuLab, CNRS-UNS-NUS-NTU International Joint Research Unit
Research Centres: Nanoelectronics Centre of Excellence 
Rights: © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).
Fulltext Permission: open
Fulltext Availability: With Fulltext
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