Nonlinear optical response of hole-trion systems in quantum dots in tilted magnetic fields

Details Nonlinear optical response of hole-trion systems in quantum dots in tilted magnetic fields Nonlinear optical response of hole-trion systems in quantum dots in tilted magnetic fields

2010-09-11

arxiv.org/abs/1009.2202v1

Phys.Status Solidi C 8, 1231-1234 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures, conference NOEKS10

Scientific paper

10.1002/pssc.201000809

We discuss, from a theoretical point of view, the four wave mixing spectroscopy on an ensemble of p-doped quantum dots in a magnetic field slightly tilted from the in-plane configuration. We describe the system evolution in the density matrix formalism. In the limit of coherent ultrafast optical driving, we obtain analytical formulas for the single system dynamics and for the response of an inhomogeneously broadened ensemble. The results are compared to the previously studied time-resolved Kerr rotation spectroscopy on the same system. We show that the Kerr rotation and four wave mixing spectra yield complementary information on the spin dynamics (precession and damping).

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