Dresden 2009 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 48: Poster 2
HL 48.53: Poster
Thursday, March 26, 2009, 15:00–17:30, P2
Photon statistics as a probe for exciton correlations in Coulomb-coupled quantum dots — •Alexander Carmele1, Malek Bagheri Harouni2, Marten Richter1, and Andreas Knorr1 — 1Institut für Theoretische Physik, AG Nichtlineare Optik und Quantenelektronik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany — 2Physics Department, Quantum Optics Group, University of Isfahan, Isfahan, Iran
Recently, quantum optical spectroscopy of semiconductor nanostructures is suggested [1]. Within a density-matrix approach, we include Coulomb-contributions in coupled quantum dots via an exciton basis [2] and investigate for fixed light intensity the impact of photon statistics on the creation of optically active excitons. We find measurable differences for the creation efficiency. Furthermore, we calculate the degree of entanglement of photon pairs from radiative cascades of biexcitons [3] in dependence on different Coulomb-coupling mechanisms.
| [1] | M. Kira, S.W. Koch, Phys. Rev. Phys. Rev. A 78, 022102 (2008) |
| [2] | M. Richter, K.J. Ahn, A. Knorr, A. Schliwa, D. Bimberg, M. E.-A. Madjet, |
| T. Renger, Phys.Status Solidi B, 243(10):2302-2310, 2006 | |
| [3] | U. Hohenester, G. Pfanner, and M. Seliger, Phys. Rev. Lett. 99, 047402 (2007) |