Two-photon coherent polarization flipping of confined excitons
classification
❄️ cond-mat.mes-hall
keywords
two-photoncoherentexcitonflippinglaserpolarizationprocessbiexciton
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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.
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