Regensburg 2022 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 17: Quantum Dots and Wires 4: Devices
HL 17.7: Talk
Wednesday, September 7, 2022, 11:30–11:45, H32
Coherent Spin Control in InAs Quantum Dots Emitting in the Telecom C-Band — •Johannes Michl1, Łukasz Dusanowski1,3, Cornelius Nawrath2, Michael Jetter2, Simone L. Portalupi2, Tobias Huber1, Peter Michler2, and Sven Höfling1 — 1Technische Physik, Julius-Maximilians University of Würzburg — 2Institut für Halbleiteroptik und Funktionelle Grenzflächen (IHFG), University of Stuttgart — 3Princeton University
Semiconductor quantum dots can be used as spin-photon interfaces, enabling the preparation of photonic cluster states with a single spin in the quantum dot acting as the entangler. This leads the way towards memory-less quantum repeater protocols for quantum network applications. InAs quantum dots can be grown on metamorphic buffer layers, leading to strain relaxed growth and therefore light emission directly into the telecom C-band. Here we show magneto and polarization resolved photoluminescence experiments conducted to characterize the different charge complexes in a single quantum dot. Furthermore, we implement laser pulse sequences to gain full coherent control over a hole qubit.