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Ultralong Dephasing Time in InGaAs Quantum Dots

Borri, Paola, Langbein, Wolfgang Werner, Schneider, S., Woggon, U., Sellin, R. L., Ouyang, D. and Bimberg, D. 2001. Ultralong Dephasing Time in InGaAs Quantum Dots. Physical Review Letters (PRL) 87 (15) , 157401. 10.1103/PhysRevLett.87.157401

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We measure a dephasing time of several hundred picoseconds at low temperature in the groundstate transition of strongly confined InGaAs quantum dots, using a highly sensitive four-wave mixing technique. Between 7 and 100 K the polarization decay has two distinct components resulting in a non-Lorentzian line shape with a lifetime-limited zero-phonon line and a broadband from elastic excitonacoustic phonon interactions.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Physics and Astronomy
Publisher: American Physical Society
ISSN: 0031-9007
Last Modified: 01 Jun 2019 22:14

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