ETH Zurich

Abstract:

This talk explores the universal features of quantum systems with long-range interactions, highlighting recent advancements relevant for experimental platforms such as Rydberg atom arrays, dipolar systems, trapped-ion setups, and cold atoms in cavities. The seminar will describe critical behaviors, including thermal and quantum phase transitions, and dynamical phenomena such as metastability and the Kibble-Zurek mechanism. Finally, we will discuss how proper understanding of long-range interactions will lead to improved quantum simulations, enhanced quantum robustness and the development of novel quantum algorithms.

Reference:

N. D., Tobias Donner, T. Macrì, G. Pagano, S. Ruffo, A. Trombettoni, Rev. Mod. Phys. 95, 035002 (2023)

Bio: Born on May 19, 1988, Nicolò Defenu is an Italian physicist specializing in theoretical physics, particularly in quantum many-body systems and critical phenomena. He completed his BSc and MSc with honors at Sapienza University of Rome and earned his PhD from the International School for Advanced Studies (SISSA) in Trieste in 2017. After his PhD, Defenu held postdoctoral positions at the Institute for Theoretical Physics in Heidelberg and ETH Zurich. Among several grants and fellowships, he received the ERC Starting Grant on 2022 and, one year later, became an assistant professor at ETH Zurich. His research focuses universality, low-energy physics and quantum technology.

Location:M830

Contact: Lei Wang 9853