104 citations · 211 across the 18 of their papers we have counts for
18 papers
Ultra-high-vacuum cluster tool for epitaxial synthesis and optical spectroscopy of reactive 2D materials
M. Dembecki, J. Schabesberger, M. Bissolo +8
The large-area synthesis of high-crystalline-quality two-dimensional (2D) materials is at the core of novel material integration for semiconductor technology. This effort relies on…
Molecular beam epitaxy of wafer-scale O-band InAs/InGaAs quantum dots on GaAs for quantum photonics
Pavel S. Avdienko, Lukas Hanschke, Quirin Buchinger +13
We report a scalable molecular beam epitaxy strategy to achieve a low density of O-band electrically tunable InAs/InGaAs quantum dots (QDs) on GaAs(001) substrates. Our approach is…
Electrically tunable orbital coupling and quantum light emission from O-band quantum dot molecules
P. S. Avdienko, L. Hanschke, Q. Buchinger +10
We present the observation of electrically tunable quantum coupling of orbital states in individual InAs/InGaAs quantum dot molecules emitting in the telecom O-band (~1300 nm). By…
Unveiling the growth mode diagram of GaSe on sapphire
M. Bissolo, M. Dembecki, J. Belz +10
The growth of two-dimensional epitaxial materials on industrially relevant substrates is critical for enabling their scalable synthesis and integration into next-generation technol…
Deterministic Control of Photon-Number Probabilities via Phase-Controlled Quantum Interference
Sang Kyu Kim, Eduardo Zubizarreta Casalengua, Yeji Sim +8
Deterministically tailoring optical Fock states beyond the single-photon level is crucial for boson sampling, loss-tolerant photonic qubits, and quantum-enhanced sensing, however h…
Selective filtering of multi-photon events from a single-photon emitter
Friedrich Sbresny, Carolin Calcagno, Sang Kyu Kim +7
Single-photon purity is one of the most important key metrics of many quantum states of light. For applications in photonic quantum technologies, e.g. quantum communication and lin…
Dynamically Dressed States of a Quantum Four-Level System
Carolin Calcagno, Friedrich Sbresny, Thomas K. Bracht +8
In this work, we experimentally and theoretically study the dressed-state emission of the biexciton-exciton cascade in a semiconductor quantum dot under pulsed, resonant, two-photo…
Telecom quantum dots on GaAs substrates as integration-ready high performance single-photon sources
Beatrice Costa, Bianca Scaparra, Xiao Wei +6
The development of deterministic single photon sources emitting in the telecommunication bands is a key challenge for quantum communication and photonic quantum computing. Here, we…
Unlocking multiphoton emission from a single-photon source through mean-field engineering
Sang Kyu Kim, Eduardo Zubizarreta Casalengua, Katarina Boos +9
Single-photon emission from a two-level system offers promising perspectives for the development of quantum technologies, where multiphotons are generally regarded as accidental, u…
MBE-grown virtual substrates for quantum dots emitting in the telecom O- and C-bands
Bianca Scaparra, Elise Sirotti, Akhil Ajay +9
InAs semiconductor quantum dots (QDs) emitting in the near infrared are promising platforms for on-demand single-photon sources and spin-photon interfaces. However, the realization…
Signatures of dynamically dressed states
Katarina Boos, Sang Kyu Kim, Thomas Bracht +10
The interaction of a resonant light field with a quantum two-level system is of key interest both for fundamental quantum optics and quantum technological applications employing re…
Coherent Dynamics of the Swing-Up Excitation Technique
Katarina Boos, Friedrich Sbresny, Sang Kyu Kim +9
Developing coherent excitation methods for quantum emitters which enable high brightness, good single-photon purity and high indistinguishability of the emitted photons has been a…
Quantum dot molecule devices with optical control of charge status and electronic control of coupling
Frederik Bopp, Jonathan Rojas, Natalia Revenga +13
Tunnel-coupled pairs of optically active quantum dots - quantum dot molecules (QDMs) - offer the possibility to combine excellent optical properties such as strong light-matter cou…
Stimulated generation of indistinguishable single photons from a quantum ladder system
Friedrich Sbresny, Lukas Hanschke, Eva Schöll +7
We propose a scheme for the generation of highly indistinguishable single photons using semiconductor quantum dots and demonstrate its performance and potential. The scheme is base…
Ultrathin catalyst-free InAs nanowires on silicon with distinct 1D sub-band transport properties
Fabio del Giudice, Jonathan Becker, Claudio de Rose +6
Ultrathin InAs nanowires (NW) with one-dimensional (1D) sub-band structure are promising materials for advanced quantum-electronic devices, where dimensions in the sub-30 nm diamet…
Non-linear two-photon resonance fluorescence on a single artificial atom
P. -L. Ardelt, M. Koller, T. Simmet +7
We report two-photon resonance fluorescence of an individual semiconductor artificial atom. By non-linearly driving a single quantum dot via a two-photon transition, we probe the l…
Controlled tunneling induced dephasing of Rabi rotations for ultra-high fidelity hole spin initialization
P. L. Ardelt, T. Simmet, K. Müller +6
We report the sub-picosecond initialization of a single heavy hole spin in a self-assembled quantum dot with >98.5 % fidelity and without external magnetic field. Using an opticall…
Dissipative preparation of the exciton and biexciton in a self-assembled quantum dot on picosecond timescales
Per-Lennart Ardelt, Lukas Hanschke, Kevin A. Fischer +9
Pulsed resonant fluorescence is used to probe ultrafast phonon-assisted exciton and biexciton preparation in individual self-assembled InGaAs quantum dots. By driving the system us…