Single-photon and photon pair emission from individual (In,Ga)As quantum dots

S M Ulrich, M Benyoucef, P Michler, J Wiersig, N Baer, P Gartner, F Jahnke, M Schwab, H Kurtze, R Oulton, M Bayer, S Fafard, Z Wasilewski, A Forchel

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)


We present investigations on triggered single-photon emission and two-color photon cascades from single quantum dots (QDs) and/or single QDs embedded in microcavities. For the photoluminescence intensity of QDs in pillar microcavities a strong enhancement is revealed in comparison to QDs in bulk semiconductors, thus reflecting an efficient coupling of the emission to the cavity mode. In particular, the capability of efficient triggered single-photon generation from such devices is demonstrated by photon statistics measurements. From investigations on bare QDs without a surrounding cavity structure, we also demonstrate the selective addressing of neutral or charged carrier configurations in individual QDs by variable excitation energy. Direct evidence is found for the temporally-correlated decay of a charged biexciton through an excited trionic QD state.

Original languageEnglish
Title of host publicationPhysics of Semiconductors, Pts A and B
EditorsJ Menendez, CG VanDeWalle
Place of PublicationMELVILLE
PublisherAmerican Institute of Physics (AIP)
Number of pages4
ISBN (Print)0-7354-0257-4
Publication statusPublished - 2005
Event27th International Conference on the Physics of Semiconductors (ICPS-27) - Flagstaff, Arizona, United States
Duration: 26 Jul 200430 Jul 2004


Conference27th International Conference on the Physics of Semiconductors (ICPS-27)
Country/TerritoryUnited States
CityFlagstaff, Arizona

Structured keywords

  • Photonics and Quantum


Dive into the research topics of 'Single-photon and photon pair emission from individual (In,Ga)As quantum dots'. Together they form a unique fingerprint.

Cite this