Intersubband Polariton-Polariton Scattering in a Dispersive Microcavity.
Phys Rev Lett
; 128(24): 247401, 2022 Jun 17.
Article
em En
| MEDLINE
| ID: mdl-35776456
The ultrafast scattering dynamics of intersubband polaritons in dispersive cavities embedding GaAs/AlGaAs quantum wells are studied directly within their band structure using a noncollinear pump-probe geometry with phase-stable midinfrared pulses. Selective excitation of the lower polariton at a frequency of â¼25 THz and at a finite in-plane momentum k_{â} leads to the emergence of a narrowband maximum in the probe reflectivity at k_{â}=0. A quantum mechanical model identifies the underlying microscopic process as stimulated coherent polariton-polariton scattering. These results mark an important milestone toward quantum control and bosonic lasing in custom-tailored polaritonic systems in the mid and far infrared.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Alemanha
País de publicação:
Estados Unidos