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Ultralong Dephasing Time in InGaAs Quantum Dots

Borri, Paola ORCID: https://orcid.org/0000-0002-7873-3314, Langbein, Wolfgang Werner ORCID: https://orcid.org/0000-0001-9786-1023, 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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Abstract

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 Dec 2022 10:15
URI: https://orca.cardiff.ac.uk/id/eprint/1540

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