Glass supported ZnSe microring strongly coupled to a single CdSe quantum dot

Renner, Johannes; Worschech, Lukas; Forchel, Alfred; Mahapatra, Suddhasatta; Brunner, Karl
October 2008
Applied Physics Letters;10/13/2008, Vol. 93 Issue 15, p151109
Academic Journal
By means of molecular beam epitaxy a single layer of self-assembled CdSe quantum dots (QDs) embedded in a ZnSe/ZnMgSSe heterostructure was grown on a GaAs substrate. Electron beam lithography and etching techniques were then applied to pattern microrings. Afterward the microstructures were glued on a glass support and the GaAs was totally removed. The photoluminescence of such glass supported rings was studied for different temperatures, and tuning of single QD lines into resonance with a cavity photon mode was achieved. Strong coupling was found with a Rabi splitting of 0.7 meV attributed to the strong oscillator strength of CdSe quantum dots.


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