320 citations · 606 across the 9 of their papers we have counts for
9 papers
Controlled Coherent Coupling in a Quantum Dot Molecule Revealed by Ultrafast Four-Wave Mixing Spectroscopy
Daniel Wigger, Johannes Schall, Marielle Deconinck +18
Semiconductor quantum dot molecules are considered as promising candidates for quantum technological applications due to their wide tunability of optical properties and coverage of…
Design and fabrication of ridge waveguide-based nanobeam cavities for on-chip single-photon sources
Uğur Meriç Gür, Yuhui Yang, Johannes Schall +8
We report on the design of nanohole/nanobeam cavities in ridge waveguides for on-chip, quantum-dot-based single-photon generation. Our design overcomes limitations of a low-refract…
Bright electrically controllable quantum-dot-molecule devices fabricated by in-situ electron-beam lithography
Johannes Schall, Marielle Deconinck, Nikolai Bart +15
Self-organized semiconductor quantum dots represent almost ideal two-level systems, which have strong potential to applications in photonic quantum technologies. For instance, they…
A deterministically fabricated spectrally-tunable quantum dot based single-photon source
S. Fischbach, M. v. Helversen, M. Schmidt +6
Spectrally-tunable quantum-light sources are key elements for the realization of long-distance quantum communication. A deterministically fabricated single-photon source with a pho…
A stand-alone fiber-coupled single-photon source
Alexander Schlehahn, Sarah Fischbach, Ronny Schmidt +5
In this work, we present a stand-alone and fiber-coupled quantum-light source. The plug-and-play device is based on an optically driven quantum dot delivering single photons via an…
CSAR 62 as negative-tone resist for high-contrast e-beam lithography at temperatures between 4 K and room temperature
Arsenty Kaganskiy, Tobias Heuser, Ronny Schmidt +2
The temperature dependence of the electron-beam sensitive resist CSAR 62 is investigated in its negative-tone regime. The writing temperatures span a wide range from 4 K to room te…
Generating single photons at GHz modulation-speed using electrically controlled quantum dot microlenses
A. Schlehahn, R. Schmidt, C. Hopfmann +7
We report on the generation of single-photon pulse trains at a repetition rate of up to 1 GHz. We achieve this high speed by modulating the external voltage applied on an electrica…
Enhanced photon-extraction efficiency from deterministic quantum-dot microlenses
M. Gschrey, M. Seifried, L. Krüuger +8
The prospect of realizing building blocks for long-distance quantum communication is a major driving force for the development of advanced nanophotonic devices. Significant progres…
In-situ electron-beam lithography of deterministic single-quantum-dot mesa-structures using low-temperature cathodoluminescence spectroscopy
M. Gschrey, F. Gericke, A. Schüßler +6
We report on the deterministic fabrication of sub-um mesa structures containing single quantum dots by in-situ electron-beam lithography. The fabrication method is based on a two-s…