Prof. Davide Rossini
University of Pisa & INFN, Italy
13th March 2023, 5:00pm - 6:00pm (GST)
Entanglement transitions in many-body monitored fermionic systems
It is known that the unitary dynamics of a many-body quantum system generally enhances quantum correlations among its constituents. On the other hand, when the system is coupled to some external monitoring apparatus and measured, such correlations may be suppressed. The interplay between such two effects may originate sharp transitions in the entanglement behavior. I will discuss some recent developments in this context, focusing on quadratic fermionic systems such as the Kitaev chain: different regimes are possible, ranging from area-law to volume-law scaling of the entanglement with the system size, depending on the coupling strength with the environment, as well on the Hamiltonian parameters and the type of performed measurements.
Davide Rossini obtained a master degree in Physics at the University of Insubria (Como, Italy) in 2003, working on quantum chaos and quantum information with prof. Giulio Casati and prof. Giuliano Benenti. He pursued his PhD studies at Scuola Normale Superiore (Pisa, Italy), under the supervision of prof. Rosario Fazio, and eventually got the PhD in 2007, with a thesis in the field of quantum information processing, quantum many-body systems, and spin chains. As a post-doc, he first joined the International School for Advanced studies (Trieste, Italy) and then came back to Scuola Normale Superiore. Finally, he moved to the University of Pisa as an associate professor, where he is currently. He is active in the theoretical study of low dimensional quantum many-body systems and quantum simulators, having coauthored more than 100 papers on those topics. He is an expert in numerical tools for the quantum many-body problem, ranging from exact-diagonalization to tensor-network approaches.