Polariton Laser in the Bardeen-Cooper-Schrieffer Regime
| Autor: | Zhaorong Wang, Seonghoon Kim, Hui Deng, Jiaqi Hu, Rolf Binder, N. H. Kwong, Christian Schneider, Sven Höfling, Sebastian Brodbeck |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Photon
Exciton QC1-999 General Physics and Astronomy FOS: Physical sciences Physics::Optics 01 natural sciences 010305 fluids & plasmas law.invention law 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Polariton 010306 general physics Absorption (electromagnetic radiation) Physics Condensed Matter::Quantum Gases Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics business.industry Condensed Matter::Other Laser Polarization (waves) Photonics business Lasing threshold |
| Zdroj: | Physical Review X, Vol 11, Iss 1, p 011018 (2021) |
| ISSN: | 2160-3308 |
| Popis: | Microcavity exciton polariton systems can have a wide range of macroscopic quantum effects that may be turned into better photonic technologies. Polariton Bose-Einstein condensation and photon lasing have been widely accepted in the limits of low and high carrier densities, but identification of the expected Bardeen-Cooper-Schrieffer (BCS) state at intermediate densities remains elusive, as the optical-gain mechanism cannot be directly inferred from existing experiments. Here, using a microcavity with strong polarization selectivity, we gain direct experimental access to the reservoir absorption in the presence of polariton condensation and lasing, which reveals a fermionic gain mechanism underlying the polariton laser. A microscopic many-particle theory shows that this polariton lasing state is consistent with an open-dissipative-pumped system analog of a polaritonic BCS state. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|