Abstract
We measured dephasing times in InGaAl/As self-assembled quantum dots at low temperature using degenerate four-wave mixing. At 0K, the coherence time of the quantum dots is lifetime limited, whereas at finite temperatures pure dephasing by exciton-phonon interactions governs the quantum dot coherence. The inferred homogeneous line widths are significantly smaller than the line widths usually observed in the photoluminescence from single quantum dots indicating an additional inhomogeneours broadening mechanism in the latter.
Original language | English |
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Title of host publication | Third IEEE Conference on Nanotechnology, 2003. IEEE-NANO 2003. |
Volume | 1 |
Publisher | IEEE |
Publication date | 2003 |
Pages | 122-125 |
ISBN (Print) | 07-80-37976-4 |
DOIs | |
Publication status | Published - 2003 |
Event | 3rd IEEE Conference on Nanotechnology - San Francisco, United States Duration: 12 Aug 2003 → 14 Aug 2003 Conference number: 3 https://ieeexplore.ieee.org/xpl/conhome/8708/proceeding |
Conference
Conference | 3rd IEEE Conference on Nanotechnology |
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Number | 3 |
Country/Territory | United States |
City | San Francisco |
Period | 12/08/2003 → 14/08/2003 |
Internet address |