Intersubband Polariton-Polariton Scattering in a Dispersive Microcavity

Year: 2022

Authors: 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.

Autors Affiliation: Univ Regensburg, Dept Phys, D-93040 Regensburg, Germany; Univ Paris Saclay, Ctr Nanosci & Nanotechnol C2N, CNRS, UMR 9001, F-91120 Palaiseau, France; Univ Trento, INO CNR BEC Ctr, I-38123 Povo, Italy; Univ Trento, Dipartimento Fis, I-38123 Povo, Italy; CNR IOM, Lab TASC, Area Sci Pk, I-34149 Trieste, Italy; TU Dortmund Univ, Dept Phys, D-44227 Dortmund, Germany.

Abstract: 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 ~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 toward quantum control and bosonic lasing in custom-tailored polaritonic systems in the mid and far infrared.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 128 (24)      Pages from: 247401-1  to: 247401-7

More Information: We thank Martin Furthmeier, Ignaz Laepple, and Imke Gronwald for technical assistance, and Simone De Liberato for discussions. This work was supported by the European Union Future and Emerging Technologies (FET) Grant No. 737017 (MIR-BOSE) . This work was partially supported by the French RENATECH network. The experiments in Regensburg were partially supported by the Deutsche Forschungsgemeinschaft through research Grant No. HU1598/8.
KeyWords: BOSE-EINSTEIN CONDENSATION; MATTER; LIGHT
DOI: 10.1103/PhysRevLett.128.247401

Citations: 16
data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-17
References taken from IsiWeb of Knowledge: (subscribers only)
Connecting to view paper tab on IsiWeb: Click here
Connecting to view citations from IsiWeb: Click here