Two-Photon Coherent Polarization Flipping of Confined Excitons |
| P. Machnikowski
Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland |
| Full Text PDF |
| Received: 9 06 2007; |
| A 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. |
| DOI: 10.12693/APhysPolA.112.289 PACS numbers: 78.67.Hc |