Dresden 2017 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 63: Poster: Quantum Dots and Optics
HL 63.51: Poster
Wednesday, March 22, 2017, 15:00–19:00, P1A
Towards coherent optical coupling of two single quantum dots in a microdisk photonic molecule — •Simon Seyfferle1, Fabian Hargart1, Matthias Paul1, Michael Jetter1, Tsung-Li Liu2, Evelyn Hu2, and Peter Michler1 — 1Institut für Halbleiteroptik und Funktionelle Grenzflächen, Universität Stuttgart, Allmandring 3, 70569 Stuttgart — 2School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, MA 02138
The coherent control of the interaction of two quantum dots in a coupled quantum system promises e.g. the implementation of parallel qubit operation for quantum information processing applications. To grant individual addressability and selective tunability of each quantum dot, attempts are undertaken to realize coherent coupling between two dots each in a different GaInP-based microdisk resonator.
We apply optical spectroscopy and mode selective real space imaging as well as photoluminescence mapping to discern single quantum dots possibly coupled to a microdisk supermode. These means provide evidence of mode coupling across the inter-disk gap as well as dots in resonance with such coupled modes. Second-order correlation measurements performed on a quantum dot located in the non-excited disk reveal an antibunching, thus indicating that its excitation is mediated via the coupled disk mode.