Publication

Polaritons In Confined Systems

Vincenzo Savona
1994
Journal Articles

Abstract

Polaritons in confined systems are introduced and their dispersion is calculated. The amount of squeezing of confined excitons polaritons in GaAs quantum wells is evaluated.

Official source

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Vincenzo Savona
1994
Journal Articles

Abstract

Polaritons in confined systems are introduced and their dispersion is calculated. The amount of squeezing of confined excitons polaritons in GaAs quantum wells is evaluated.

Official source

Related concepts (17)

Quantum well

A quantum well is a potential well with only discrete energy values. The classic model used to demonstrate a quantum well is to confine particles, which were initially free to move in three dimensions, to two dimensions, by forcing them to occupy a planar region. The effects of quantum confinement take place when the quantum well thickness becomes comparable to the de Broglie wavelength of the carriers (generally electrons and holes), leading to energy levels called "energy subbands", i.e.

Quantum dot

Quantum dots (QDs) – also called semiconductor nanocrystals, are semiconductor particles a few nanometres in size, having optical and electronic properties that differ from those of larger particles as a result of quantum mechanics. They are a central topic in nanotechnology and materials science. When the quantum dots are illuminated by UV light, an electron in the quantum dot can be excited to a state of higher energy. In the case of a semiconducting quantum dot, this process corresponds to the transition of an electron from the valence band to the conductance band.

Polariton

In physics, polaritons pəˈlærᵻtɒnz,_poʊ- are quasiparticles resulting from strong coupling of electromagnetic waves with an electric or magnetic dipole-carrying excitation. They are an expression of the common quantum phenomenon known as level repulsion, also known as the avoided crossing principle. Polaritons describe the crossing of the dispersion of light with any interacting resonance. To this extent polaritons can also be thought of as the new normal modes of a given material or structure arising from the strong coupling of the bare modes, which are the photon and the dipolar oscillation.

Related publications (7)

Polaritons In Confined Systems

Chat with Graph Search

Engineering GaAs nanostructures for heterointegration with 2D transition metal dichalcogenides

Strong Charge-Photon Coupling and High-Efficiency Microwave Photodetection in Hybrid Quantum Dot-Resonator Systems

Effects of background n- and p-type doping on Zn diffusion in GaAs AlGaAs multiple-quantum-well structures