Publication

The microcavity AC Stark triplet: Excitation in the exciton continuum

Benoît Marie Joseph Deveaud, Ursula Oesterle, Jean-Louis Staehli, Cristiano Ciuti, Michele Saba
2000
Journal Articles

Abstract

The coherent optical response of high quality microcavities containing quantum wells is investigated. The dynamics of the ac Stark effect is investigated by degenerate pump-probe experiments, by exciting the quantum well excitons at various intensities and detunings. The evolution from a simple dynamical excitonic Stark shift to a splitting is dearly observed, even when the excitation is degenerate with the continuum states. The experimental results agree well with the predictions of a theoretical model based on the semiconductor Maxwell-Bloch equations.

Official source

https://infoscience.epfl.ch/entities/publication/ac9935e1-dce4-4a58-9324-0ee043255c6d

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Benoît Marie Joseph Deveaud, Ursula Oesterle, Jean-Louis Staehli, Cristiano Ciuti, Michele Saba
2000
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/ac9935e1-dce4-4a58-9324-0ee043255c6d

About this result

Related concepts (28)

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.

Quantum mechanics

Quantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles. It is the foundation of all quantum physics including quantum chemistry, quantum field theory, quantum technology, and quantum information science. Classical physics, the collection of theories that existed before the advent of quantum mechanics, describes many aspects of nature at an ordinary (macroscopic) scale, but is not sufficient for describing them at small (atomic and subatomic) scales.

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The microcavity AC Stark triplet: Excitation in the exciton continuum

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