A5013676106- Particle physics theoretical and experimental studies
- Cold Atom Physics and Bose-Einstein Condensates
- High-Energy Particle Collisions Research
- Enzyme-mediated dye degradation
- Smart Cities and Technologies
- Particle Detector Development and Performance
- Advanced Frequency and Time Standards
- Quantum Dots Synthesis And Properties
- Innovation and Knowledge Management
- Service and Product Innovation
- Quantum, superfluid, helium dynamics
- Innovation and Socioeconomic Development
- Private Equity and Venture Capital
- Digital Platforms and Economics
- Atomic and Subatomic Physics Research
- Quantum Information and Cryptography
- Quantum Chromodynamics and Particle Interactions
- Semiconductor Quantum Structures and Devices
- Strong Light-Matter Interactions
- Nuclear physics research studies
- Scientific Measurement and Uncertainty Evaluation
- Radiation Therapy and Dosimetry
- Electron and X-Ray Spectroscopy Techniques
- Entrepreneurship Studies and Influences
- Securities Regulation and Market Practices
Leibniz University Hannover
2022-2024
University of St. Gallen
2017-2019
Technische Universität Berlin
2017-2019
Wuppertal Institute for Climate, Environment and Energy
2019
Internationale Akademie Berlin
1972-1987
Physikalisch-Technische Bundesanstalt
1980
Ministry of Science, Research and Technology
1979
Crystal Research (United States)
1972-1977
Charles University
1971-1973
Kristal University
1973
This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around world to discuss exciting developments in large-scale atom interferometer (AI) prototypes and their potential for detecting ultralight dark matter gravitational waves. primary objective was lay groundwork an international TVLBAI proto-collaboration. collaboration aims unite researchers different institutions strategize...
Quantum-light sources based on semiconductor quantum dots (QDs) are promising candidates for many applications in photonics and communication. Important emission characteristics of such emitters, namely the single-photon purity photon indistinguishability, usually assessed via time-correlated measurements using standard 'click' detectors Hanbury Brown Twiss or Hong-Ou-Mandel (HOM-) type configurations. In this work, we employ a state-of-the-art photon-number-resolving (PNR) detection system...
We report on two-photon interference (TPI) experiments using remote deterministic single-photon sources. Employing 3D in-situ electron-beam lithography, we fabricate quantum-light sources at specific target wavelengths by integrating pre-selected semiconductor quantum dots within monolithic microlenses. The individual show TPI visibilities of 49% and 22%, respectively, under pulsed p-shell excitation 80 MHz. For the mutual sources, observe an uncorrected visibility 29%, in quantitative...
Abstract We report on the design and construction of a sounding rocket payload capable performing atom interferometry with Bose-Einstein condensates $$^{41}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow/><mml:mn>41</mml:mn></mml:msup></mml:math> K $$^{87}$$ xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow/><mml:mn>87</mml:mn></mml:msup></mml:math> Rb. The apparatus is designed to be launched in two consecutive missions VSB-30 qualified...
This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around world to discuss exciting developments in large-scale atom interferometer (AI) prototypes and their potential for detecting ultralight dark matter gravitational waves. primary objective was lay groundwork an international TVLBAI proto-collaboration. collaboration aims unite researchers different institutions strategize...
We present a highly efficient method for the numerical solution of coupled Gross–Pitaevskii equations describing evolution dynamics multi-species mixture Bose–Einstein condensates in time-dependent potentials. This method, based on moving and expanding reference frame, compares favorably to more standard but much computationally expensive frozen frame. It allows an accurate description long-time behavior interacting, quantum mixtures including challenging problem long free expansions...
We exploit red- and blue-detuned magneto-optical trapping (MOT) of 87Rb benefitting from a simplified setup novel approach based on liquid crystal variable retarders (LCVR). To maintain the forces when switching to MOT, handedness circular polarization cooling beams needs be reversed. LCVRs allow fast control represent compact, simple, cost-efficient components, which can easily implemented in existing laser systems. This way, we achieve type-II MOT for 8.7 × 108 atoms with sub-Doppler...
The declarative programming language Curry amalgamates demand-driven evaluation from functional with non-determinism logic programming. In contrast to Prolog, the search strategy for non-deterministic computations is not fixed so that complete or parallel strategies are reasonable Curry. particular, a desirable option fair which frees programmer considering influence of success computation. this paper we describe an implementation property. Based on recent developments operational models...
We present a highly efficient method for the numerical solution of coupled Gross-Pitaevskii equations describing evolution dynamics multispecies mixture Bose-Einstein condensates in time-dependent potentials. This method, based on grid-scaling technique, compares favorably to more standard but much computationally expensive frozen-resolution grid. It allows an accurate description long-time behavior interacting, multi-species quantum mixtures including challenging problem long free...
In this paper, we explore knowledge transfer in the context of frugal innovation (i.e., a specific form resource-constraint innovation). Based on original data from 11 case studies, observe two distinct clusters. Firms cluster 'active' are signified by their direct experience target market. Companies 'non-active' were not physically present market prior to initiative. Further, three phases emerged along value creation process: 1) research; 2) development; 3) go-to-market. It became evident...
Saturation curves for a plane-parallel ionisation chamber have been studied in pulsed electron beam of 5.2 MeV initial energy as function voltage, depth and charge density liberated per pulse. It is shown that, if ion losses by diffusion recombination are appropriately considered, the remaining volume can be described Boag's theory (1950). The constant mu this has determined to (2.7+or-0.1)*1010 V m C-1. This value consistent with data on collection characteristics obtained using same...
In this paper, we explore knowledge transfer in the context of frugal innovation (i.e., a specific form resource-constraint innovation). Based on original data from 11 case studies, observe two distinct clusters. Firms cluster 'active' are signified by their direct experience target market. Companies 'non-active' were not physically present market prior to initiative. Further, three phases emerged along value creation process: 1) research; 2) development; 3) go-to-market. It became evident...
We report on the design and construction of a sounding rocket payload capable performing atom interferometry with Bose-Einstein condensates $^{41}$K $^{87}$Rb. The apparatus is designed to be launched in two consecutive missions VSB-30 qualified withstand expected vibrational loads 1.8 g root-mean-square frequency range between 20 - 2000 Hz static during ascent re-entry 25 g. present modular scientific comprising physics package, laser system, an electronics system battery module. A...