Key properties of quantum materials stem from dynamic interaction chains that connect
stable electronic quasiparticles through short-lived coherences, which are difficult to control …

The optically excited system of electronic excitations in semiconductor nanostructures is
analyzed theoretically. A many-body theory based on an equation-of-motion approach for …

Many-body systems in nature exhibit complexity and self-organization arising from
seemingly simple laws. For example, the long-range Coulomb interaction between electrical …

Excitons are quasi-particles that form when Coulomb-interacting electrons and holes in
semiconductors are bound into pair states. They have many features analogous to those of …

The integrated absorption of an excitonic resonance is a measure of a semiconductor's
coupling to an optical field. The concept of an exciton–polariton expresses the non …

We report a comprehensive experimental study and detailed model analysis of the terahertz
dielectric response and density kinetics of excitons and unbound electron-hole pairs in …

The study of semiconductor heterostructures started more than forty years ago. In the 1980s
this area of research moved to the forefront of semiconduc tor physics, largely due to …

We have probed the internal structure and nonlinear response of magnetoexcitons in
GaAs/AlGaAs quantum wells by resonantly driving one-and two-photon internal transitions …

A fully microscopic theory is presented for interacting electrons, holes, photons, and
phonons in semiconductor heterostructures. The formation dynamics and statistics of …

We report the first terahertz study of the intraexcitonic 1 s-2 p transition at high excitation
densities in GaAs∕ Al x Ga 1− x As quantum wells. A strong shift, broadening, and …