Descripción del proyecto
Polaritones intersubbanda allanan el camino hacia una optoelectrónica sin precedentes
La optoelectrónica integra el uso de la electrónica con la interacción entre la luz y la materia y está abriendo caminos en las comunicaciones ópticas, la iluminación, los sensores ópticos y las células solares. La mayoría de los dispositivos optoelectrónicos se basan en el llamado acoplamiento débil entre la luz y la materia. Un acoplamiento fuerte entre ambos puede conducir a la formación de polaritones de cavidad que son en parte luz y en parte excitación material. En los semiconductores, los excitones-polaritones son el tipo de sistema fuertemente acoplado más estudiado. Recientemente se ha descubierto un nuevo tipo de excitación: los polaritones intersubbanda. El equipo del proyecto MIR-BOSE, financiado con financiado con fondos europeos, pretende demostrar su potencial con dispositivos optoelectrónicos completamente nuevos para el infrarrojo medio y lejano basados en polaritones intersubbanda y en la condensación de Bose-Einstein.
Objetivo
Optoelectronic devices typically operate in the weak coupling regime between light and matter, for example in conventional lasers relying on population inversion to achieve optical gain. Recently there has been a surge of interest in quantum systems operating instead in the strong coupling regime, when the coupling strength of the light-matter interaction is so strong that new states – cavity polaritons – are created, that are partially light, partially material excitation. In semiconductors, exciton-polaritons have been the most widely studied type of strongly coupled system. Recently a new phenomenon has been realized exploiting intersubband transitions. The resulting excitations are called intersubband polaritons, and they have two remarkable properties: (i) a bosonic character that is maintained up to high carrier densities since they are not restricted by the Mott transition limit; (ii) large Rabi splittings. Although the scientific community has explored the basic science of intersubband polaritons, their potential for future and innovative optoelectronic devices has been entirely untapped.
The MIR-BOSE project will realize this potential, and demonstrate disruptive optoelectronic devices operating in the strong coupling regime between light and matter. We will demonstrate the first bosonic lasers operating in the mid-IR and THz ranges of the electromagnetic spectrum. Laser action here does not rely on population inversion, so we will achieve temperature independent operation and high powers. We will demonstrate a new concept of inverse-Q-switching leading to the generation of high power pulses in the mid-IR, overcoming severe bottlenecks in current technology. Finally, we will demonstrate non-classical/quantum light sources and devices, generating squeezed states of light in the mid-IR/THz spectral range for quantum optics. These new sources will have a major impact on several technologies and applications, being advantageous compared to current solutions.
Ámbito científico
- natural sciencesphysical scienceselectromagnetism and electronicsoptoelectronics
- natural sciencesphysical sciencesopticslaser physicsultrafast lasers
- natural sciencesphysical scienceselectromagnetism and electronicssemiconductivity
- natural sciencesphysical sciencesquantum physicsquantum optics
- natural sciencesphysical sciencesopticslaser physicspulsed lasers
Programa(s)
Convocatoria de propuestas
Consulte otros proyectos de esta convocatoriaConvocatoria de subcontratación
H2020-FETOPEN-1-2016-2017
Régimen de financiación
RIA - Research and Innovation actionCoordinador
91190 Gif-Sur-Yvette
Francia