110 citations · 722 across the 40 of their papers we have counts for
41 papers
Monolithic axial InGaAs quantum dot emitters in GaAs-based nanowires via Sb-mediated facet engineering
Hyowon W. Jeong, Aris Koulas-Simos, Imad Limame +6
GaAs-based nanowires hosting active quantum heterostructures provide a promising route toward monolithic integration of single-photon sources on silicon, a key requirement for scal…
Buried Stressor Engineering for Position-Controlled InGaAs Quantum Dots with Local Density Variation for Integrated Quantum Photonics
Martin Podhorský, Maximilian Klonz, Lux Böhmer +5
We report on the monolithic, two-step epitaxial growth of site-controlled InGaAs quantum dots via the buried stressor method with local quantum dot density variation. As a result o…
Scalable Quantum Photonic Platform Based on Site-Controlled Quantum Dots Coupled to Circular Bragg Grating Resonators
Kartik Gaur, Avijit Barua, Sarthak Tripathi +12
The scalable integration of solid-state quantum emitters into photonic nanostructures remains a central challenge for quantum photonic technologies. Here, we demonstrate a robust a…
Deterministic nanofabrication of quantum dot-circular Bragg grating resonators with high process yield using in-situ electron beam lithography
Avijit Barua, Kartik Gaur, Leo J. Roche +5
The controlled integration of quantum dots (QDs) as single-photon emitters into quantum light sources is essential for the implementation of large-scale quantum networks. In this s…
Interplay of energy and charge transfer in WSe2/CrSBr heterostructures
José Roberto de Toledo, Caique Serati de Brito, Barbara L. T. Rosa +12
Van der Waals heterostructures (vdWHs) composed of transition-metal dichalcogenides (TMDs) and layered magnetic semiconductors offer great opportunities to manipulate exciton and v…
Annealing-inspired training of an optical neural network with ternary weights
Anas Skalli, Mirko Goldmann, Nasibeh Haghighi +3
Artificial neural networks (ANNs) represent a fundamentally connectionnist and distributed approach to computing, and as such they differ from classical computers that utilize the…
A Fiber-pigtailed Quantum Dot Device Generating Indistinguishable Photons at GHz Clock-rates
Lucas Rickert, Kinga Żołnacz, Daniel A. Vajner +11
Solid-state quantum light sources based on semiconductor quantum dots (QDs) are increasingly employed in photonic quantum information applications. Especially when moving towards r…
High Purcell-enhancement in quantum-dot hybrid circular Bragg grating cavities for GHz-clockrate generation of indistinguishable photons
Lucas Rickert, Daniel A. Vajner, Martin von Helversen +8
We present Purcell-enhanced () semiconductor InAs quantum dot decay times of ps, enabled by deterministic hybrid circular Bragg gratings (hCBGs). We inve…
Electrical manipulation of intervalley trions in twisted MoSe homobilayers at room temperature
Bárbara L. T. Rosa, Paulo E. Faria Junior, Alisson R. Cadore +6
The impressive physics and applications of intra- and interlayer excitons in a transition metal dichalcogenide twisted-bilayer make these systems compelling platforms for exploring…
Bright electrically contacted circular Bragg grating resonators with deterministically integrated quantum dots
Setthanat Wijitpatima, Normen Auler, Priyabata Mudi +7
Cavity-enhanced emission of electrically controlled semiconductor quantum dots is essential in developing bright quantum devices for real-world quantum photonic applications. Combi…
Enhancement of interlayer exciton emission in a TMDC heterostructure via a multi-resonant chirped microresonator up to room temperature
Chirag C. Palekar, Barbara Rosa, Niels Heermeier +5
We report on multi-resonance chirped distributed Bragg reflector (DBR) microcavities. These systems are employed to investigate the light-mater interaction with both intra- and int…
Room-temperature ladder-type optical memory compatible with single photons from InGaAs quantum dots
Benjamin Maaß, Norman Vincenz Ewald, Avijit Barua +2
On-demand storage and retrieval of quantum information in coherent light-matter interfaces is a key requirement for future quantum networking and quantum communication applications…
Epitaxial growth and characterization of multi-layer site-controlled InGaAs quantum dots based on the buried stressor method
Imad Limame, Ching-Wen Shih, Alexej Koltchanov +8
We report on the epitaxial growth, theoretical modeling, and structural as well as optical investigation of multi-layer, site-controlled quantum dots fabricated using the buried st…
Telecom band quantum dot technologies for long-distance quantum networks
Ying Yu, Shunfa Liu, Chang-Min Lee +5
A future quantum internet is expected to generate, distribute, store and process quantum bits (qubits) over the globe by linking different quantum nodes via quantum states of light…
Amplification of interlayer exciton emission in twisted WSe/WSe/MoSe heterotrilayers
Chirag C. Palekar, Paulo E. Faria Junior, Barbara Rosa +4
Transition metal dichalcogenide (TMDC) heterostructures have unique properties that depend on the twisting angle and stacking order of two or more monolayers. However, their practi…
Intermediate Field Coupling of Single Epitaxial Quantum Dots to Plasmonic Waveguides
Michael Seidel, Yuhui Yang, Thorsten Schumacher +6
Key requirements for quantum plasmonic nanocircuits are reliable single-photon sources, high coupling efficiency to the plasmonic structures and low propagation losses. Self-assemb…
High- lasing in photonic-defect semiconductor-dielectric hybrid microresonators with embedded InGaAs quantum dots
Kartik Gaur, Ching-Wen Shih, Imad Limame +6
We report an easy-to-fabricate microcavity design to produce optically pumped high- quantum dot microlasers. Our cavity concept is based on a buried photonic-defect for tight la…
Assessing the alignment accuracy of state-of-the-art deterministic fabrication methods for single quantum dot devices
Abdulmalik A. Madigawa, Jan N. Donges, Benedek Gaál +13
The realization of efficient quantum light sources relies on the integration of self-assembled quantum dots (QDs) into photonic nanostructures with high spatial positioning accurac…
Temperature dependent temporal coherence of metallic-nanoparticle-induced single-photon emitters in a WSe monolayer
Martin von Helversen, Lara Greten, Imad Limame +7
In recent years, much research has been undertaken to investigate the suitability of two-dimensional materials to act as single-photon sources with high optical and quantum optical…
Noise-induced dynamics and photon statistics in bimodal quantum-dot micropillar lasers
Yanqiang Guo, Jianfei Zhang, Xiaomin Guo +2
Emission characteristics of quantum-dot micropillar lasers (QDMLs) are located at the intersection of nanophotonics and nonlinear dynamics, which provides an ideal platform for stu…
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…
Low-threshold lasing of optically pumped micropillar lasers with AlGaAs/AlGaAs distributed Bragg reflectors
Ching-Wen Shih, Imad Limame, Sebastian Krüger +4
We report on the design, realization and characterization of optically pumped micropillar lasers with low-absorbing AlGaAs/AlGaAs dielectric Bragg r…
Energy-time entanglement from a resonantly driven quantum dot three-level system
M. Hohn, K. Barkemeyer, M. von Helversen +8
Entanglement is a major resource in advanced quantum technology, where it can enable secure exchange of information over large distances. Energy-time entanglement is particularly a…
Scalable deterministic integration of two quantum dots into an on-chip quantum circuit
Shulun Li, Yuhui Yang, Johannes Schall +9
Integrated quantum photonic circuits (IQPCs) with deterministically integrated quantum emitters are critical elements for scalable quantum information applications and have attract…