2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/140562A two-photon process leading to coherent transitions between the two circularly polarized exciton states in a quantum dot is studied. It is shown that optical flipping of the exciton polarization is possible with picosecond laser pulses. The process is closely related to two-photon Rabi oscillations of a biexciton but it is much more stable against shifts of the laser frequency.To be presented at the school Jaszowiec 2007Mesoscale and Nanoscale Physicstext