Research

Currently, I am a researcher at the Physics Department of the University of Salerno (Italy). Here I am actively collaborating with theoretical and experimental physicists on various lines of research, still pursuing the scientific collaborations established over the years. In particular, I am working on: i) unconventional Josephson systems, ii) modeling of both parametric and travelling-wave Josephson amplifiers, iii) the thermoelectric properties of superconducting tunnel junctions, and iv) the Josephson-based single-photon detection, with an eye on the axion search, to name just a few. 

Recently, I was a Postdoc at the Material Physics Center in San Sebastian (Spain) within the "Mesoscopic Physics Group" (MPG) headed by Dr. S. Bergeret, working on theoretical studies of magneto‐electric effects at hybrid interfaces between superconductors and magnetic insulators. I conceived a non-volatile superconducting memory based on the bistable magnetic behavior of a current-biased φ0-junction, that is a superconductor-ferromagnet-superconductor junction with a Rashba-like spin-orbit coupling. I studied its properties, the phenomenon of current-induced magnetisation reversal, and tested its robustness to stochastic thermal fluctuations. In addition, I analysed the response of a Josephson interferometer made by anomalous junctions. 

Previously, I was a Postdoc at CNR-NANO working at NEST, a Laboratory of Scuola Normale Superiore born in Pisa (Italy) to promote and support interdisciplinary scientific researches in nanotechnology. Specifically, I was employed in the “Mesoscopic Superconductivity Group" headed by Dr. F. Giazotto, working closely with both theoretical and experimental physicists. During this postdoc I explored theoretically transport properties (from both thermal and electronic points of view) of Josephson junctions, always looking towards possible concrete applications. In this highly stimulating context, I made relevant theoretical contributions to the field of mesoscopic thermal transport in Josephson devices, e.g., accounting for transport across the junction due to magnetically induced solitons, namely, magnetic flux quanta confined at the S-I interfaces. In this regard, I conceived a thermal memory, a thermal router, a heat oscillator, and a threshold calorimeter, namely, different Josephson devices taking advantages of the possibility to master the temperature gradient.

During my PhD in the “Group of Interdisciplinary Theoretical Physics” headed by Prof. B. Spagnolo at Palermo University (Italy), I acquired good skills in dealing with complex systems embedded in a noisy environment, with main focus on Josephson devices. Here, I established my expertise in dealing with solid-state computational and analytical methods to master the quasiclassical formalism used to describe the electrodynamics of Josephson junctions. The research activity focused on the theoretical analysis of noise-induced effects in different Josephson devices, formed by electrodes separated by an insulator or suspended on graphene, with different geometries and sources of noise. In long Josephson junctions, I explored how noise affects the evolution of peculiar solitonic excitations, such as kinks and breathers. I also faced anomalous diffusion in the presence of non-Gaussian noise sources, i.e., Lévy distributed stochastic fluctuations, for the strongly nonlinear nature of the Josephson devices suggests the use for detecting this peculiar type of stochastic fluctuations.