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Per comodità riportiamo qui i contributi dello spoke 6 nelle varie sessioni del congresso.
Per il programma completo si faccia riferimento alla pagina web ufficiale
https://nqsti.it/events/secondo-congresso-nazionale-nqsti
In caso di discordanze, il programma sulla pagina ufficiale è quello corretto.
Activities on the SUPERCONDUCTING PLATFORM
At CNR-INO lab in Trento we realize highly tunable quantum spin mixtures of sodim atoms, exhibiting magnetic properties. Such an experimental platform is extremely versatile and can be exploited as quantum simulator of different phenomena.
I present our results on quantum transport with ultracold atoms in engineered optical circuits. I will describe our works on ultracold atoms in ring potentials, mimicking the behaviour of electrons in solid state devices.
The research in linear optics quantum computing aims to optimize a Silicon Photonic Integrated Circuit, focusing on the universal two-qubit Controlled-NOT gate prototype, which operates on a linear, coincidence basis with single-photon inputs.
We report the design and fabrication of lithium niobate nanostructured resonators for enhancement and directional beaming of spontaneous parametric down-conversion photons. Preliminary measurements achieved photon-pair production rates up to 300 Hz/W at telecom wavelengths.
Intersubband photodetector for LWIR photons based on resonant state absorption in quantum dots shows absorption up to room temperature thanks to the enhanced extraction efficiency without sacrificing the absorption probability.
We study optical forces and trapping of hybrid quantum-plasmonic nanoparticles with a metal nanoshell and a gain-enriched core, below and above the emission threshold.
This open perspectives for single-particle nanolaser with potential for quantum-enhanced plasmonics.
An optimization study of dye-sensitized solar cells (DSSCs) enhanced power conversion efficiency by integrating gold nanoparticles into a TiO2 semiconductor and refining particle sizes, leveraging the unique properties of noble metal nanostructures for improved performance.
We report on coupled cavity configurationin whith high Q-factor elliptical TESLA-shaped superconducting cavity is coupled with a high permittivity (εr) SrTiO3 puck measured down T=0.2K. Extensive electromagnetic simulations are used to test different coupling configurations.
I will present results about oxide two-dimensional electron systems (2DES) characterized by functional properties engineered by epitaxy. I will show that 2DES with multiple coexisting order parameters can be designed and realized using this approach.
We present anomalous magneto-transport dominated by non-trivial Berry curvature and Dirac-like fermions exhibited by artificial 2DES at (111) LaAlO3/EuTiO3/SrTiO3 interface, where structural and electronic properties are tailored to mimic that of magnetic gapped topological insulators.
We present the experimental results obtained by measuring the performances of a NbSe2 qubit.
We investigated simulation techniques for superconducting transmon qubits, comparing their
predictions with experimental results. The promising agreement observed highlights the potential of these methods to guide the design of qubits for quantum sensing applications.
We investigate the use of Radio-Frequency System on Chip (RFSoC) FPGA boards to build a custom
control system for superconducting qubits control. RFSoC boards offer the benefits of being cost-efficient,
compact, and fully configurable.
We developed scalable, state of the art overlap Al/Al-Ox/Al Josephson junctions for quantum applications, including transmon qubits and a novel cryogenic on-chip microwave frequency shifter.
We present Qibo, an open-source quantum computing framework offering a full-stack solution for efficient deployment of quantum algorithms and calibration routines on quantum hardware.
Quantum Collective States in Superconducting 5-Qubit Network
We report the fabrication of a monolithically integrated QRNG with an Indium Phosphide platform. The device offers a better level of security than fully-trusted systems, with a predicted secure generation rate > 13.3984 Gb/s
Here we realize ultracompact entangled photon sources by periodically poling 2D semiconductors (3R-MoS2), demonstrating quasi-phase-matched up- and down-conversion over micron-thick pathlengths.
3D architectures with superconducting qubits are very attractive solutions for several quantum applications. We report here our recent progress in design and fabrication of such devices and in their characterization.
3D architectures with superconducting qubits are highly attractive solutions for various quantum applications. We report our recent progress in the design, fabrication, and surface preparation of superconducting cavities, achieving significant quality factor (Q) increase.
The development of superconducting quantum devices has enabled advancements in quantum sensing, particularly for light-dark matter searches. We propose an enhanced detection scheme leveraging multiple qubits to reduce dark-count rates.
We present the current progress towards a rapid simulation and design framework for KI-TWPAs and examples of its use, such as the development of a novel frequency converter-amplifier device.
Development of superconducting high kinetic inductance devices
The current status of development of practical and reliable Josephson junctions-based traveling wave parametric amplifiers (JTWPA) for qubit integration and readout is reported.
Project STAR develops TiAu TES single-photon detectors with photon-number resolution, with the goal to achieve >90% detection efficiency and 1 𝜇s response time. Results on TESs with gold banks and antireflection coatings are presented
We have carried out a comparison between novel theoretical approach and experiments on quantum collective dynamics of superconducting qubit network (SQN) embedded in microwave planar resonators.
We report on the observation of an ultrafast pump-driven Kerr rotation in centrosymmetric bulk WSe2. We rationalize these findings as result of the hidden entanglement among several qauntum degrees of
freedom
Superconducting quantum systems and fundamental physics experiments demand amplifiers with large bandwidth and noise to the quantum limit. We present Kinetic Inductance Traveling-Wave Parametric Amplifiers, designed to enhance qubit and detector readout with improved performance.
Twin beams are observed in an optical resonator where cascaded second harmonic generation and optical parametric oscillation occur. We measure a squeezing level up to -5 dB in their intensity difference.