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Evidence of six-particle Coulomb correlations in six-wave-mixing signals from a semiconductor quantum well

Title data

Axt, Vollrath M. ; Bolton, S. R. ; Neukirch, U. ; Sham, L. J. ; Chemla, D. S.:
Evidence of six-particle Coulomb correlations in six-wave-mixing signals from a semiconductor quantum well.
In: Physical Review B. Vol. 63 (March 2001) Issue 11 . - Eintrag 115303 (12 Seiten).
ISSN 0163-1829
DOI: https://doi.org/10.1103/PhysRevB.63.115303

Project information

Project financing: Deutsche Forschungsgemeinschaft
Office of Energy Research, Office of Basic Energy Sciences, Division of Material Sciences of the U.S. Department of Energy, under Contract No. DE-AC03-76SF00098 and the Max Kade Foundation

Abstract in another language

Six-wave-mixing signals from a ZnSe quantum well are analyzed experimentally and with a microscopic density-matrix description using the dynamics-controlled-truncation scheme. For each physically distinct combination of polarizations of the exciting pulses, the spectrum of six-wave-mixing emission is measured as a function of time delay. The experimental results are compared with calculations performed at different levels of approximation. Although the leading order contributions to six-wave-mixing signals are of fifth order in the laser field, we show that there are significant signal components that are due to at least χ(7) processes. The sensitivity of six-wave-mixing signals to high-order Coulomb correlations is demonstrated. Six-point density matrices are found to be indispensable for the interpretation of our experiments, while some details seem to indicate the involvement of even higher-order correlation functions. Furthermore, we find a remarkable dynamical decoupling of spectral signatures and the delay-time behavior after excitation with linearly polarized pulses.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: Condensed matter physics (theoretical and experimental)
Keywords: quantum wells; excitons; multiwave mixing; optical correlation; 2-particle level; 4-particle correlations; detailed microscopic theory; dynamics controlled truncation; six-wave mixing; six-particle correlations; higher order exciton correlations; nonlinear optical response; semiconductors; two-pair continuum correlations; polarization dependence; phase measurement; Excitons; non-linear optics; ultrafast dynamics
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III > Chair Theoretical Physics III - Univ.-Prof. Dr. Martin Axt
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III
Result of work at the UBT: No
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 17 Oct 2017 15:03
Last Modified: 17 Oct 2017 15:03
URI: https://eref.uni-bayreuth.de/id/eprint/40054