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Transient absorption spectroscopy of a single lateral InGaAs quantum dot molecule

Title data

Wolpert, Christian ; Wang, Lijuan ; Rastelli, Armando ; Schmidt, Oliver G. ; Giessen, Harald ; Lippitz, Markus:
Transient absorption spectroscopy of a single lateral InGaAs quantum dot molecule.
In: Physica Status Solidi B. Vol. 249 (April 2012) Issue 4 . - pp. 731-736.
ISSN 0370-1972
DOI: https://doi.org/10.1002/pssb.201100783

Abstract in another language

Lateral quantum dot molecules promise a scalable approach to quantum registers. The individual neutral exciton states can be controlled by a lateral bias voltage. In this way radiative emission of localized excitons can be switched between the two quantum dots in the molecule. Here, we report on coherent absorption spectroscopy of a single quantum dot molecule. By transient reflection spectroscopy we demonstrate that not only the emission but also the absorption switches from one dot to the other when varying the applied electric field. This result is consistent with Rabi flopping showing a radically suppressed dipole moment for the non-emitting exciton transition.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik III - Nanooptik
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik III - Nanooptik > Lehrstuhl Experimentalphysik III - Nanooptik - Univ.-Prof. Dr. Markus Lippitz
Result of work at the UBT: No
DDC Subjects: 500 Science
500 Science > 530 Physics
Date Deposited: 17 Dec 2015 07:20
Last Modified: 17 Dec 2015 07:28
URI: https://eref.uni-bayreuth.de/id/eprint/28954