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research article
Excitonic Bloch equations for a two-dimensional system of interacting excitons
2000
We derive the effective Bose Hamiltonian for a system of interacting excitons applying the Usui transformation. The fermionic nonlinearities are consistently included, leading to a density dependent correction to the kinetic Hamiltonian and to a saturation of the exciton oscillator strength. The exciton-exciton interaction potentials due to the Coulomb interaction are calculated, accounting for the spin dependence. Starting from the effective Hamiltonian, we obtain the excitonic Bloch equations. As a first application, we study the problem of excitonic Rabi oscillations in quantum wells.
Type
research article
Web of Science ID
WOS:000087284900073
Authors
Publication date
2000
Published in
Volume
61
Start page
13856
End page
13862
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
September 22, 2009
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