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Non‐linear optics on an exciton state in a single quantum dot
Author(s) -
Melet Romain,
Grousson Roger,
Voliotis Valia,
Wang XueLun
Publication year - 2008
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200777609
Subject(s) - quantum dot , exciton , physics , ground state , biexciton , coherence (philosophical gambling strategy) , excitation , picosecond , rabi cycle , condensed matter physics , quantum optics , coherent control , coupling (piping) , atomic physics , quantum mechanics , quantum , materials science , laser , metallurgy
We report on non‐linear effects on the exciton ground state in a single quantum dot, driven by a strong resonant optical field. The resonant excitation is achieved by embedding the quantum dots in a waveguiding structure. Thus, the light–matter coupling is enhanced, allowing the observation of Rabi oscillations up to three periods. With increasing pulse area, a decrease of the exciton lifetime is observed leading to a very rapid damping of the oscillations amplitude. Resonant coherent control experiments show that the coherence time of the ground exciton state in a single quantum dot is fast, of the order of a few tens of picoseconds. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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