Signatures of Two-Pair Correlations after Simultaneous Excitation of Excitons and Free Electron-Hole Pairs in a Quantum Wire

Autor:	Tilmann Kuhn, J. Wühr, K. Siantidis, Vollrath M. Axt
Rok vydání:	2002
Předmět:	Physics Free electron model Four-wave mixing Scattering Quantum wire Exciton Born approximation Atomic physics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Biexciton Excitation Electronic Optical and Magnetic Materials
Zdroj:	physica status solidi (a). 190:775-779
ISSN:	1521-396X 0031-8965
DOI:	10.1002/1521-396x(200204)190:3<775::aid-pssa775>3.0.co;2-w
Popis:	The impact of all kinds of two-pair correlations (biexcitons, exciton-exciton scattering states, two free electron-hole pairs) on four-wave-mixing (FWM) signals generated by ultra-short optical pulses that simultaneously excite excitons and free electron-hole pairs is analyzed. Calculations accounting non-perturbatively for the Coulomb interaction are compared with the Born approximation (BA) and mean-field (MF) results. Thereby signatures of two-pair correlations are identified as well as qualitative differences between microscopic scattering theories and phenomenological treatments of pair relaxations.
Databáze:	OpenAIRE
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