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View article: The microwave phase locking in Bloch transistor
The microwave phase locking in Bloch transistor Open
We report on observation of two coherent quantum phenomena, the current quantization in the Josephson Junction (JJ) and the Aharonov-Casher effect. The synergy of two effects is seen as the phase locking of the JJ with the oscillating char…
Bloch Transistor for Cryogenic Quantum Electronics Open
We report on the development of a Bloch transistor (BT) for the emerging platform of cryogenic quantum electronics. The BT is a fully quantum non-dissipative device facilitating precise delivery of the quantised current to the circuit, I=2…
Feasibility of the Josephson voltage and current standards on a single chip Open
The quantum Josephson voltage standard is well established across the metrology community for many years. It relies on the synchronization of the flux tunneling in the S/I/S Josephson junctions (JJ) with the microwave radiation (MW) of fre…
Sharpness of the Berezinskii-Kosterlitz-Thouless Transition in Disordered NbN Films Open
We present a comprehensive investigation of the Berezinskii-Kosterlitz-Thouless transition in ultrathin strongly disordered NbN films. Measurements of resistance, current-voltage characteristics, and kinetic inductance on the very same dev…
Integration of Passivated Gold Mirrors into Microfabricated Alkali Vapor Cells Open
Measurements of weak magnetic fields demand a small distance between the sensor and the to-be-measured object. Optically pumped magnetometers (OPMs) utilize laser light and the Zeeman effect in alkali vapor cells to measure those fields. O…
View article: Reflection-enhanced gain in traveling-wave parametric amplifiers
Reflection-enhanced gain in traveling-wave parametric amplifiers Open
The operating principle of traveling-wave parametric amplifiers is typically understood in terms of the standard coupled mode theory, which describes the evolution of forward propagating waves without any reflections, i.e., for perfect imp…
Sharpness of the Berezinskii-Kosterlitz-Thouless transition in ultrathin NbN films Open
We present a comprehensive investigation of the Berezinskii-Kosterlitz-Thouless (BKT) transition in ultrathin strongly disordered NbN films. Measurements of resistance, current-voltage characteristics and kinetic inductance on the very sam…
The innovation of iron and the Xiongnu – a case study from Central Mongolia Open
This article presents the oldest iron smelting furnaces of the Xiongnu Empire period in central Mongolia and argues that a significant smelting center existed at the site of Baga Nariĭn Am. Five iron smelting furnaces and four smelting ins…
Measured data of article "Superconducting NbN–Al hybrid technology for quantum devices" Open
The folder contains raw data of figure 3 & 4 as well as a preprint of the article: Superconducting NbN–Al hybrid technology for quantum devices Authors: E. Mutsenik, S. Linzen, E. Il’ichev, M. Schmelz, M. Ziegler, V. Ripka, B. Steinbach, G…
Measured data of article "Superconducting NbN–Al hybrid technology for quantum devices" Open
The folder contains raw data of figure 3 & 4 as well as a preprint of the article: Superconducting NbN–Al hybrid technology for quantum devices Authors: E. Mutsenik, S. Linzen, E. Il’ichev, M. Schmelz, M. Ziegler, V. Ripka, B. Steinbach, G…
Measured data of article in J. Vac. Sci. Technol. A 39, 052401 (2021); doi: 10.1116/6.0001126 Open
The folder contains raw and fitted data of the in 2021 published article: Wafer-level uniformity of atomic-layer-deposited niobium nitride thin films for quantum devices, Authors: Emanuel Knehr, Mario Ziegler, Sven Linzen, Konstantin Ilin,…
Measured data of article in J. Vac. Sci. Technol. A 39, 052401 (2021); doi: 10.1116/6.0001126 Open
The folder contains raw and fitted data of the in 2021 published article: Wafer-level uniformity of atomic-layer-deposited niobium nitride thin films for quantum devices, Authors: Emanuel Knehr, Mario Ziegler, Sven Linzen, Konstantin Ilin,…
Analysis of Low-Temperature Magnetotransport Properties of NbN Thin Films Grown by Atomic Layer Deposition Open
Superconducting niobium nitride (NbN) films with nominal thicknesses of 4 nm, 5 nm, 7 nm, and 9 nm were grown on sapphire substrates using atomic layer deposition (ALD). We observed probed Hall resistance (HR) (Rxy) in external out-of-plan…
View article: High-Resolution Direct Push Sensing in Wetland Geoarchaeology—First Traces of Off-Site Construction Activities at the Fossa Carolina
High-Resolution Direct Push Sensing in Wetland Geoarchaeology—First Traces of Off-Site Construction Activities at the Fossa Carolina Open
Wetland environments, with their excellent conservation conditions, provide geoarchaeological archives of past human activities. However, the subsurface soil is difficult to access due to high groundwater tables, unstable sediments, and th…
Mapping Karakorum, the capital of the Mongol Empire Open
In the thirteenth century AD, the city of Karakorum was founded as the capital of the Mongol Empire. Relatively little archaeological attention, however, has been directed at the site and the phenomenon of steppe urbanism. The authors repo…
Wafer-level uniformity of atomic-layer-deposited niobium nitride thin films for quantum devices Open
Superconducting niobium nitride thin films are used for a variety of photon detectors, quantum devices, and superconducting electronics. Most of these applications require highly uniform films, for instance, when moving from single-pixel d…
View article: Sediment budgeting of short‐term backfilling processes: The erosional collapse of a Carolingian canal construction
Sediment budgeting of short‐term backfilling processes: The erosional collapse of a Carolingian canal construction Open
Sediment budgeting concepts serve as quantification tools to decipher the erosion and accumulation processes within a catchment and help to understand these relocation processes through time. While sediment budgets are widely used in geomo…
View article: 792 or 793? Charlemagne’s canal project: craft, nature and memory
792 or 793? Charlemagne’s canal project: craft, nature and memory Open
In autumn 793, Charlemagne visited the fossatum magnum (the ‘big ditch’ or canal) between the Rhine and Danube. Excavations, dendrochronology and a re‐reading of Carolingian Annals shed new light on the chronology and setting of this canal…
Non-invasive prospection techniques and direct push sensing as high-resolution validation tools in wetland geoarchaeology – Artificial water supply at a Carolingian canal in South Germany? Open
The prospection of (geo-)archaeological sites yield important knowledge about the concept and the utilisation of pre-historical and historical infrastructure. The satisfactory conduction of classical prospection methods like archaeological…
View article: 3D-Modelling of Charlemagne’s Summit Canal (Southern Germany)—Merging Remote Sensing and Geoarchaeological Subsurface Data
3D-Modelling of Charlemagne’s Summit Canal (Southern Germany)—Merging Remote Sensing and Geoarchaeological Subsurface Data Open
The Early Medieval Fossa Carolina is the first hydro-engineering construction that bridges the Central European Watershed. The canal was built in 792/793 AD on order of Charlemagne and should connect the drainage systems of the Rhine-Main …
Thin-Film-Based Ultralow Noise SQUID Magnetometer Open
We report on the development of an ultralow noise thin-film based SQUID\nmagnetometer. A niobium thin-film pickup coil is connected to the input coil of\na SQUID current sensor. The low capacitance of the used sub-micrometer\ncross-type Jo…