D. Di Gioacchino
A5069065233- Physics of Superconductivity and Magnetism
- Dark Matter and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Advanced Condensed Matter Physics
- Superconducting and THz Device Technology
- Magnetic and transport properties of perovskites and related materials
- Quantum Information and Cryptography
- Superconducting Materials and Applications
- High-pressure geophysics and materials
- Cold Atom Physics and Bose-Einstein Condensates
- Iron-based superconductors research
- Rare-earth and actinide compounds
- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Quantum, superfluid, helium dynamics
- Computational Physics and Python Applications
- Superconductivity in MgB2 and Alloys
- Particle accelerators and beam dynamics
- Pulsars and Gravitational Waves Research
- Quantum and electron transport phenomena
- Cold Fusion and Nuclear Reactions
- Particle Accelerators and Free-Electron Lasers
- Nuclear Physics and Applications
- Quantum optics and atomic interactions
- Theoretical and Computational Physics
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2015-2024
Frascati Scienza
2022-2024
Istituto Nazionale di Fisica Nucleare
1999-2023
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro
2023
Institute of Nuclear Physics
2009
SRI International
2000
To account for the dark-matter content in our Universe, postinflationary scenarios predict QCD axion a mass range $(10--{10}^{3})\text{ }\text{ }\ensuremath{\mu}\mathrm{eV}$. Searches with haloscope experiments this require monitoring of resonant cavity modes frequency above 5 GHz, where several experimental limitations occur due to linear amplifiers, small volumes, and low quality factors copper cavities. In paper, we deal last issue, presenting result search galactic axions using based on...
A haloscope of the QUAX--$a\gamma$ experiment composed an oxygen-free high thermal conductivity-Cu cavity inside 8.1 T magnet and cooled to $\sim200$ mK is put in operation for search galactic axion with mass $m_a\simeq43~\mu\text{eV}$. The power emitted by resonant amplified a Josephson parametric amplifier whose noise fluctuations are at standard quantum limit. With data collected about 1 h frequency $\nu_c=10.40176$ GHz, reaches sensitivity necessary detection QCD-axion, setting $90\%$...
A ferromagnetic axion haloscope searches for dark matter in the form of axions by exploiting their interaction with electronic spins. It is composed an axion-to-electromagnetic field transducer coupled to a sensitive rf detector. The former photon-magnon hybrid system, and latter based on quantum-limited Josephson parametric amplifier. system consists ten 2.1 mm diameter yttrium iron garnet spheres single microwave cavity mode means static magnetic field. Our setup most spin magnetometer...
Electronic functionalities in materials from silicon to transition metal oxides are a large extent controlled by defects and their relative arrangement. Outstanding examples the of copper, where defect order is correlated with high superconducting temperatures. The oxygen can be highly inhomogeneous, even "optimal" samples, which raises question nature sample regions does not exist but nonetheless form "glue" binding ordered together. Here we use scanning X-ray microdiffraction (with beam...
A haloscope of the QUAX--$a\ensuremath{\gamma}$ experiment, composed an high-$Q$ resonant cavity immersed in a 8 T magnet and cooled to $\ensuremath{\sim}4.5\text{ }\text{ }\mathrm{K}$ is operated search for galactic axions with mass ${m}_{a}\ensuremath{\simeq}42.8\text{ }\ensuremath{\mu}\mathrm{eV}$, not accessible other running experiments. The design hollow dielectric cylinders concentrically inserted OFHC Cu cavity, allowed us maintain loaded quality-factor...
Axions, originally proposed to solve the strong CP problem of quantum chromodynamics, emerge now as leading candidates WISP dark matter. The rich phenomenology associated light and stable QCD axion can be described an effective magnetic field that experimentally investigated. For QUAX experiment, matter axions are searched by means their resonant interactions with electronic spins in a magnetized sample. In principle, axion-induced magnetization changes detected embedding sample rf cavity...
A traveling wave parametric amplifier has been integrated in the haloscope of QUAX experiment. search for dark matter axions performed with a high-$Q$ dielectric cavity immersed an 8 T magnetic field and read by detection chain having system noise temperature about 2.1 K at frequency 10.353 GHz. Scanning conducted varying using sapphire rods into cavity. At multiple operating frequencies, sensitivity instrument was level viable axion models.
Axions and axion-like particles appear in well-motivated extensions of the standard model particle physics may be solution to long-standing puzzle dark matter our Universe. Several new experiments are foreseen next decade searching them a wide range parameter space. In mass region from few several tens microelectronvolt, detector sensitivity will limited by quantum limit linear amplifiers class single microwave-photon needed. We have developed photon counter based on voltage switching an...
We report the first experimental results obtained with new haloscope of QUAX experiment located at Laboratori Nazionali di Frascati INFN (LNF). The is composed a OFHC Cu resonant cavity cooled down to about 30 mK and immersed in magnetic field 8 T. frequency was varied 6 MHz range between 8.831496 8.83803 GHz. This corresponds previously unprobed mass 36.52413 36.5511 $\mu$eV. don't observe any excess power spectrum set limits on axion-photon coupling this $g_{a\gamma\gamma} < 0.861 \times...
The frequency band 1--15 GHz provides exciting prospects for resonant axion haloscopes as indicated by cosmological and astrophysical arguments. Among the challenges currently addressed to reach required sensitivity, development of high-quality factor cavities that tolerate multitesla fields plays a central role. We report three-dimensional resonator based on right-circular copper cavity with hollow cylinders confine higher-order modes around cylinder axis. Its effective volume at 10.3 is...
In this paper, we report the use of a superconducting transmon qubit in 3D cavity for quantum machine learning and photon counting applications. We first describe realization characterization coupled to resonator, providing detailed description simulation framework experimental measurement important parameters, such as dispersive shift anharmonicity. then on Quantum Machine Learning application implemented single-qubit device fit u-quark parton distribution function proton. final section...
The complex ac magnetic susceptibilities $({\ensuremath{\chi}}_{n}={\ensuremath{\chi}}_{n}^{\ensuremath{'}}+i{\ensuremath{\chi}}_{n}^{\ensuremath{''}})$ of high-${T}_{c}$ superconductors in absence dc fields have been studied by numerically solving the nonlinear diffusion equation for flux, where diffusivity is determined resistivity. In our approach parallel resistor model between creep and flux flow resistivities used, so that crossover different dynamic processes (thermally activated...
The hypothetical axion particle is an excellent cold dark matter candidate. Models predict mass of tens μeV (GHz frequency range). In principle, it possible to convert galactic axions into a monochromatic microwave signal or detect them with electron-spin flip. both cases, measure the resulting vanishing (P ≈ 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-23</sup> W), high-Q cavity needed, Q ~...
The last decade witnessed an increasing interest in axions and axion-like particles with many theoretical works published new experimental proposals that started a real race towards their discovery. This paper is the Conceptual Design Report of KLASH (KLoe magnet for Axion SearcH) experiment at Laboratori Nazionali di Frascati (LNF). idea this has been stimulated by availability large volume superconducting magnet, moderate magnetic field 0.6 T, used KLOE detector DAFNE collider. main...
Abstract Reducing noise to the quantum limit over a large bandwidth is fundamental requirement for future applications operating at millikelvin temperatures, such as neutrino mass measurement, next-generation X-ray observatory, CMB dark matter and axion detection, rapid high-fidelity readout of superconducting qubits. The read out sensitivity arrays microcalorimeter detectors, resonant axion-detectors, qubits, currently limited by temperature cryogenic amplifiers. Detector Array Readout with...
This study presents recent advancements in Josephson Traveling Wave Parametric Amplifiers (JTWPAs) developed and tested at INRiM within the DARTWARS project framework. Combining junctions with superconducting coplanar waveguides, JTWPAs offer advanced capabilities for quantum-limited broadband microwave amplification emission of non-classical radiation. The work delves into architecture, optimization, experimental characterization a JTWPA Resonant Phase-Matching mechanism, highlighting...
We propose a search of galactic axions with mass about 0.2 microeV using large volume resonant cavity, 50 m^3, cooled down to 4 K and immersed in moderate axial magnetic field 0.6 T generated inside the superconducting magnet KLOE experiment located at National Laboratory Frascati INFN. This experiment, called KLASH (KLoe for Axion SearcH) following, has potential sensitivity on axion-to-photon coupling, g_agg, 6x10^-17 GeV-1, reaching region predicted by KSVZ DFSZ models QCD axions.
The advent of ultra-low noise microwave amplifiers revolutionized several research fields demanding quantum-limited technologies. Exploiting a theoretical bimodal description linear phase-preserving amplifier, in this contribution we analyze some the intrinsic properties model architecture (i.e., an rf-SQUID based Josephson Traveling Wave Parametric Amplifier) terms amplification and generation for key case study input states (Fock coherents). Furthermore, present analysis output signals...
Ultralow-noise microwave amplification and detection play a central role in different applications, going from fundamental physics experiments to the deployment of quantum technologies. In many applications necessity reading multiple detectors, or cavities qubits, calls for large bandwidth amplifiers with lowest possible noise. Current technologies are based on High Electron Mobility Transistors Josephson Parametric Amplifiers. Both have limitations, former terms minimum noise, latter...
The recent developments in quantum technologies, as well advanced detection experiments, have raised the need to detect extremely weak signals microwave frequency spectrum. To this aim, Josephson travelling wave parametric amplifier, a device capable of reaching noise limit while providing wide bandwidth, has been proposed suitable cryogenic front-end amplifier. This work deals with numerical study without approximations regarding nonlinearity key elements. In particular, we focus on...
Quantum Sensing is a rapidly expanding research field that finds one of its applications in Fundamental Physics, as the search for Dark Matter. Devices based on superconducting qubits have already been successfully applied detecting few-GHz single photons via Non-Demolition measurement (QND). This technique allows us to perform repeatable measurements, bringing remarkable sensitivity improvements and dark count rate suppression experiments high-precision microwave photon detection, such...