Future quantum information technologies have already found in integrated photonic platforms an excellent candidate in terms of robustness, scalability, complexity and overall integrability. At the Nanoscience Laboratory of the University of Trento, we design and experimentally study circuits for photons on a chip to harness the power of entanglement and interference for diverse quantum information processing tasks. In this talk, I will discuss a few research results to which I contributed over the past five years. First, I will introduce single-photon entanglement [1] and present how it can be exploited to generate quantum-certified random numbers using on-chip path-entangled single photons from an LED [2]. Second, I will show how qudits encoded in the path of single photons from an attenuated laser can be successfully employed to implement the first, to the best of our knowledge, photonic swap test circuit [3], an algorithm returning the inner product of two quantum states. Third, I will present some results related to our efforts toward the realization of a room-temperature quantum photonic integrated platform at visible-to-near infrared wavelengths [4]. Finally, I will conclude with some perspectives about our ongoing works and interests.

References

[1] S. Azzini, et al., Single-Particle Entanglement, Adv. Quantum Technol., 3: 2000014 (2020).

[2] N. Leone, et al., Generation of quantum-certified random numbers using on-chip path-entangled single photons from an LED, Photon. Res. 11, 1484-1499 (2023).

[3] A. Baldazzi, et al., A linear swap test circuit for quantum kernel estimation, arXiv preprint arXiv:2402.17923 (2024).

[4] M. Sanna, et al., SiN integrated photonic components in the visible to near-infrared spectral region, Opt. Express 32, 9081-9094 (2024).

Venerdì 7 giugno 2024 verrà presentata la nuova edizione del Master di Radioprotezione di II livello, organizzato in collaborazione col Dipartimento.

Presentazione dei sei Curricula del Corso di Laurea Magistrale in Scienze Fisiche

Presentazione dei sei Curricula del Corso di Laurea Magistrale in Scienze Fisiche.

This seminar presents the diverse use of Machine Learning tools and approaches in High Energy Physics. It focuses on the practices of the experiments at the Large Hadron Collider (LHC) at CERN. The LHC experiments use Machine Learning in a wide range of applications. These range from straightforward procedures of trying to differentiate the new physics and known processes in data analysis using e.g. deep neural networks, to using Machine Learning to replace traditional Monte Carlo simulation of physics processes.
State-of-the-art attempts comprise using programmable FPGA chips to implement very fast Machine Learning tools in detector operations, exploring the use of Machine Learning algorithms on Quantum Computers, employ Artificial Intelligence approaches to design the new generations of experiments, solve theoretical equations, etc...
Special emphasis will be given to the implementation of the transfer of latest commercial approaches, such as generative modelling, into scientific procedures with advantages they bring as well as associated caveats. Finally, a speaker’s vision of the future of Machine Learning in HEP will be given.

Si tratta di 10 giorni full-time, nel periodo appena successivo alla fine dell’anno scolastico, nei quali gli studenti potranno conoscere da vicino il mondo della ricerca in Fisica, vivendo a stretto contatto con fisici – docenti, ricercatori, studenti - in un clima stimolante e informale.

The paradigmatic geometrical observable is the macroscopic electric polarization P of a crystalline insulator: since the early 1990s it is known that P is a geometric phase of the ground-state wavefunction. The geometrical nature of several other observables has been elucidated over the years: most notably orbital magnetization and anomalous Hall conductivity. In some special cases a geometrical observable is quantized, and becomes therefore topological: extremely robust with respect to perturbations, and measurable in principle with infinite precision.

In this talk I will start explaining what “geometrical” means in quantum mechanics. Then I will outline the main features of P and of a few other observables.

The talk will be addressed to Master/PhD students as well as to researchers.

Leo Esaki was awarded the Nobel prize in physics in 1973 for his pioneering studies on electron tunnelling: he coined the term “do-it-yourself quantum mechanics” a couple of decades after that. Since then, our toolkit for implementing this concept has expanded exponentially, advancing our ability to fabricate physical objects embodying virtually any Hamiltonian. Today we term all this quantum technology. In this conversation I shall discuss some of the trends within the solid-state realm. I aim to highlight that all this has been driven by the continuous development of few basic concepts and how this is still hindered by the lingering classical mindset and language being used.

Titolo

Il problema delle radiazioni nell'esplorazione spaziale

Relatori

Ricardo Ramos e Mario Carante

Diretta youtube

https://www.youtube.com/@physics-unipv