Photon Correlations and Cross-Correlations from a Single CdTe/ZnTe Quantum Dot

C. Couteaua, S. Moehlb, J. Suffczyńskic, J.A. Gajc, F. Tinjodb, J.M. Gérardb, K. Khengb, H. Marietteb, R. Romestaina and J.P. Poizata aCEA-CNRS-UJF Joint Group Nanophysics and Semiconductors, Laboratoire de Spectrométrie Physique, CNRS UMR 5588, Université J. Fourier Grenoble 1, 38402 Saint-Martin d’Hères, France bCEA-CNRS-UJF Joint Group Nanophysics and Semiconductors, CEA/DRFMC/SP2M, 17 rue des Martyrs, 38054 Grenoble, France cInstitute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland

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We report correlation and cross-correlation continuous wave measurements in II-VI quantum dots grown by molecular beam epitaxy. Combination of spectral selection, saturation measurements and good temporal resolution allowed us to see an antibunching effect on photons from radiative recombination of excitons in a single CdTe/ZnTe quantum dot, as well as cross-correlation within the biexciton (X2)-exciton (X) radiative cascade from the same dot. We discuss the results of our experiments in terms of a model of excitonic multitransitions.

DOI: 10.12693/APhysPolA.106.169 PACS numbers: 78.67.Hc, 42.50.Dv