A5101528653- Gyrotron and Vacuum Electronics Research
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Quantum and electron transport phenomena
- Physics of Superconductivity and Magnetism
- Topological Materials and Phenomena
- Graphene research and applications
- Atmospheric and Environmental Gas Dynamics
- Air Quality Monitoring and Forecasting
- Calibration and Measurement Techniques
- Spectroscopy and Laser Applications
- Laser Design and Applications
- Atomic and Subatomic Physics Research
- Atmospheric Ozone and Climate
- Photonic and Optical Devices
- Surface and Thin Film Phenomena
- Superconducting Materials and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Particle Detector Development and Performance
- Quantum optics and atomic interactions
- Quantum Information and Cryptography
- Nuclear Physics and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Mechanical and Optical Resonators
- Advanced Electrical Measurement Techniques
Institute of Science and Technology Austria
2021-2025
University of California, Santa Barbara
2025
University of Insubria
2022-2023
De la Préhistoire à l'Actuel : Culture, Environnement et Anthropologie
2022
Istituto Nazionale per l'Assicurazione Contro gli Infortuni sul Lavoro
2016
European Organization for Nuclear Research
1999-2003
University of Milan
1990-2002
Institute for Atomic and Molecular Physics
1996-1998
Lawrence Livermore National Laboratory
1998
University of Calabria
1995-1997
A semiconducting nanowire fully wrapped by a superconducting shell has been proposed as platform for obtaining Majorana modes at small magnetic fields. In this study, we demonstrate that the appearance of subgap states in such structures is actually governed junction region tunneling spectroscopy measurements, and not full-shell itself. Short regions never show states, whereas longer junctions always do. This can be understood terms quantum dots forming hosting Andreev levels...
Abstract Superconductor/semiconductor hybrid devices have attracted increasing interest in the past years. Superconducting electronics aims to complement semiconductor technology, while architectures are at forefront of new ideas such as topological superconductivity and protected qubits. In this work, we engineer induced two-dimensional germanium hole gas by varying distance between quantum well aluminum. We demonstrate a hard superconducting gap realize an electrically flux tunable diode...
Josephson diodes are superconducting elements that show an asymmetry in the critical current depending on direction of current. Here, we theoretically explore how alternating bias can tune response such a diode. We for slow driving there is always regime where system only carry zero-voltage dc one direction, thus effectively behaving as ideal Under fast driving, diode efficiency also tunable, although cannot be reached this case. investigate residual dissipation due to time-dependent and it...
Abstract Gate-tunable transmons (gatemons) employing semiconductor Josephson junctions have recently emerged as building blocks for hybrid quantum circuits. In this study, we present a gatemon fabricated in planar Germanium. We induce superconductivity two-dimensional hole gas by evaporating aluminum atop thin spacer, which separates the superconductor from Ge well. The junction is then integrated into an Xmon circuit and capacitively coupled to transmission line resonator. showcase qubit...
Superconductor/semiconductor hybrid devices have attracted increasing interest in the past years. Superconducting electronics aims to complement semiconductor technology, while architectures are at forefront of new ideas such as topological superconductivity and protected qubits. In this work, we engineer induced two-dimensional germanium hole gas by varying distance between quantum well aluminum. We demonstrate a hard superconducting gap realize an electrically flux tunable diode using...
Superconductor–semiconductor hybrid systems play a crucial role in realizing nanoscale quantum devices, including qubits, Majorana bound states, and Kitaev chains. For such subgap states prominent their operation. In this paper, we study these via Coulomb tunneling spectroscopy through superconducting island defined semiconductor nanowire fully coated by superconductor. We systematically explore regimes ranging from an almost decoupled to the open configuration. weak-coupling regime,...
We have investigated about the heat stress of workers in vegetable greenhouses located southern Italy. This type production technique is very widespread region and so useful search evaluation model that can better describe condition risk. on WBGT index PHS order to check which two models more functional applicable specific context. The research allowed bringing out lights shadows predictive models. In first place, we verified that, although there a vertical gradient temperature, sufficient...
In this paper we discuss a new approach to two-beam acceleration. The energy for RF production is initially stored in long-pulse electron beam which efficiently accelerated about 1.2 GeV by fully loaded, conventional, low frequency (∼1 GHz) linac. pulse length twice the of high-gradient Segments long are compressed using combiner rings create sequence higher peak power drive beams with gaps between. This train distributed from end linac against main direction down common transport line so...
A pulsed powerful Cockcroft-Walton generator for an electrostatic accelerator is presented. The designed to provide a electron beam of 5.5 MeV, 100 A, and 0.5 mu s with repetition rate 1 kHz. output voltage has descending staircase waveform. This provides made up ten sections having different energies. Two adjacent pieces have relative energy variation Delta gamma ij/ 1%. dispersive system spatially separates those into 50-ns-long pulses.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Gate-tunable transmons (gatemons) employing semiconductor Josephson junctions have recently emerged as building blocks for hybrid quantum circuits. In this study, we present a gatemon fabricated in planar Germanium. We induce superconductivity two-dimensional hole gas by evaporating aluminum atop thin spacer, which separates the superconductor from Ge well. The junction is then integrated into an Xmon circuit and capacitively coupled to transmission line resonator. showcase qubit tunability...
Superconductor-semiconductor hybrid systems play a crucial role in realizing nanoscale quantum devices, including qubits, Majorana bound states, and Kitaev chains. For such subgap states prominent their operation. In this work, we study via Coulomb tunneling spectroscopy through superconducting island defined semiconductor nanowire fully coated by superconductor. We systematically explore regimes ranging from an almost decoupled to the open configuration. weak coupling regime, experimental...
Inducing superconducting correlations in chiral edge states is predicted to generate topologically protected zero energy modes with exotic quantum statistics. Experimental efforts date have focused on engineering interfaces between materials, typically amorphous metals, and semiconducting Hall or anomalous (QAH) systems. However, the strong interfacial disorder inherent can prevent formation of isolated topological modes. An appealing alternative use low-density flat band materials where...
The CLIC Test Facility (CTF) is a prototype two-beam accelerator, in which high-current "drive beam" used to generate the RF power for main-beam accelerator. drive-beam accelerator consists of two S-band structures accelerate bunch train with total charge 500 nC. substantial beam loading compensated by operating accelerating at 7.81 MHz above and below repetition frequency, respectively. This introduces change phase from bunch, leads, together off-crest injection into an approximate...