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Coherent Excitonic Coupling in an Asymmetric Double InGaAs Quantum Well Arises from Many-Body Effects
- Source :
- Physical Review Letters 112, 046402 (2014)
- Publication Year :
- 2013
-
Abstract
- 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.
- Subjects :
- Condensed Matter - Mesoscale and Nanoscale Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Physical Review Letters 112, 046402 (2014)
- Publication Type :
- Report
- Accession number :
- edsarx.1308.1689
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.112.046402