| Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2014) | |
| Nanomaterials | Tuesday Sessions |
| Session NM-TuE |
| Session: | Nanomaterials Characterization & Reactivity II |
| Presenter: | Hanz Ramírez, Grupo de Física Teórica y Computacional, Escuela de Física, Universidad Pedagógica y Tecnológica de Colombia, Tunja, Boyacá, Colombia |
| Correspondent: | Click to Email |
In this work, a model to study the coupling between a semiconductor qubit and two time-dependent electric fields is developed. By using it in the resonantly monochromatic double dressing regime, control of the local density of optical states is theoretically and numerically demonstrated for a strongly confined exciton.
As a main result, tailored manipulation of the optical density of states in semiconductor quantum dots is proved. It is shown that by coupling a nanostructured qubit simultaneously to two distinguishable lasers whose frequencies match the exciton transition, a discrete eigenstate turns into an energy subband in a process closely analogous to band formation in solid state physics.
Such strong changes in the local density of optical states, controllable through the ratio between the driving laser intensities, open new possibilities for on-demand photon emission from artificial atoms.
The presented results are in remarkable qualitative and quantitative agreement with experimental measurements.