Photovoltaic probe of cavity polaritons in a quantum cascade structure
Abstract
The strong coupling between an intersubband excitation in a quantum cascade structure and a photonic mode of a planar microcavity has been detected by angle-resolved photovoltaic measurements. A typical anticrossing behavior, with a vacuum-field Rabi splitting of 16meV at 78K, has been measured, for an intersubband transition at 163meV. These results show that the strong coupling regime between photons and intersubband excitations can be engineered in a quantum cascade optoelectronic device. They also demonstrate the possibility to perform angle-resolved midinfrared photodetection and to develop active devices based on intersubband cavity polaritons.
- Publication:
-
Applied Physics Letters
- Pub Date:
- May 2007
- DOI:
- 10.1063/1.2739308
- arXiv:
- arXiv:quant-ph/0703052
- Bibcode:
- 2007ApPhL..90t1101S
- Keywords:
-
- 85.60.Gz;
- 07.57.Kp;
- 71.36.+c;
- 85.35.Be;
- Photodetectors;
- Bolometers;
- infrared submillimeter wave microwave and radiowave receivers and detectors;
- Polaritons;
- Quantum well devices;
- Quantum Physics;
- Condensed Matter - Other Condensed Matter
- E-Print:
- submitted to Applied Physics Letters