| Autor: |
Knorr, M., Manceau, J. M., Mornhinweg, J., Nespolo, J., Biasiol, G., Tran, N. L., Malerba, M., Goulain, P., Lafosse, X., Jeannin, M., Stefinger, M., Carusotto, I., Lange, C., Colombelli, R., Huber, R. |
| Rok vydání: |
2022 |
| Předmět: |
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| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.128.247401 |
| Popis: |
The ultrafast scattering dynamics of intersubband polaritons in dispersive cavities embedding GaAs/AlGaAs quantum wells are studied directly within their band structure using a non-collinear pump-probe geometry with phase-stable mid-infrared pulses. Selective excitation of the lower polariton at a frequency of ~25 THz and at a finite in-plane momentum, $k_{||}$, leads to the emergence of a narrowband maximum in the probe reflectivity at $k_{||}=0$. A quantum mechanical model identifies the underlying microscopic process as stimulated coherent polariton-polariton scattering. These results mark an important milestone towards quantum control and bosonic lasing in custom-tailored polaritonic systems in the mid and far-infrared. |
| Databáze: |
arXiv |
| Externí odkaz: |
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