期刊
NATURE PHOTONICS
卷 13, 期 6, 页码 378-+出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41566-019-0392-8
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资金
- Swiss State Secretariat for Education, Research and Innovation (SERI)
- European Union's Horizon-2020 framework programme through the Marie-Sklodowska Curie ITN network PHONSI [H2020-MSCA-ITN-642656]
- European Union's Horizon-2020 framework programme through the Marie-Sklodowska Curie ITN network SYNCHRONICS [H2020-MSCA-ITN-643238]
- UK Engineering and Physical Sciences Research Council [EP/M025330/1]
- MIT-Skoltech NGP Program
- Russian Science Foundation (RSF) [18-72-00227]
- Russian Science Foundation [18-72-00227] Funding Source: Russian Science Foundation
Active optical elements with ever smaller footprint and lower energy consumption are central to modern photonics. The drive for miniaturization, speed and efficiency, with the concomitant volume reduction of the optically active area, has led to the development of devices that harness strong light-matter interactions. By managing the strength of light-matter coupling to exceed losses, quasiparticles, called exciton-polaritons, are formed that combine the properties of the optical fields with the electronic excitations of the active material. By making use of polaritons in inorganic semiconductor microcavities, all-optical transistor functionality was observed, albeit at cryogenic temperatures(1). Here, we replace inorganic semiconductors with a ladder-type polymer in an optical microcavity and realize room-temperature operation of a polariton transistor through vibron-mediated stimulated polariton relaxation. We demonstrate net gain of similar to 10 dB mu m(-1), sub-picosecond switching time, cascaded amplification and all-optical logic operation at ambient conditions.
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