Berlin 2018 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
HL: Fachverband Halbleiterphysik
HL 46: Quantum dots and wires: Optical properties III
HL 46.6: Talk
Thursday, March 15, 2018, 16:30–16:45, A 151
Frequency Feedback for Two-photon Interference from Separate Quantum Dots — •Michael Zopf1, Tobias Macha2, Robert Keil1, Eduardo Uruñuela2, Yan Chen1, Wolfgang Alt2, Lothar Ratschbacher2, Fei Ding1,3, Dieter Meschede2, and Oliver G. Schmidt1,4 — 1Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstraße 20, 01069 Dresden, Germany — 2Institut für Angewandte Physik, Universität Bonn, Wegelerstraße 8, 53115 Bonn, Germany — 3Institut für Festkörperphysik, Leibniz Universität Hannover, Appelstraße 2, 30167 Hannover, Germany — 4Merge Technologies for Multifunctional Lightweight Structures, Technische Universität Chemnitz, 09107 Chemnitz, Germany
We employ frequency feedback to stabilize the single-photon emission of two separate, strain-tunable quantum dots to an atomic standard. Their transmission through a single rubidium-based Faraday filter serves as an error signal for frequency stabilization to less than 1.5 % of the emission linewidth. The long-term stability is demonstrated by two-photon interference between two quantum dots. The observed visibility of Vlock=(41 ± 5) % agrees with theoretical predictions. Our approach facilitates the way towards quantum networks with indistinguishable photons from different emitters.