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research article
Coherent Excitonic Coupling in an Asymmetric Double InGaAs Quantum Well Arises from Many-Body Effects
We study an asymmetric double InGaAs quantum well using optical two-dimensional coherent spectroscopy. The collection of zero-quantum, one-quantum, and two-quantum two-dimensional spectra provides a unique and comprehensive picture of the double well coherent optical response. Coherent and incoherent contributions to the coupling between the two quantum well excitons are clearly separated. An excellent agreement with density matrix calculations reveals that coherent interwell coupling originates from many-body interactions.
Type
research article
Web of Science ID
WOS:000331946800018
Authors
•
Moody, Galan
•
Singh, Rohan
•
Autry, Travis M.
•
Li, Hebin
•
•
Cundiff, Steven T.
Publication date
2014
Publisher
Published in
Volume
112
Issue
4
Article Number
046402
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
April 2, 2014
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