R. Onur Umucalılar
Mimar Sinan Fine Arts University
“Simulation of few-particle fractional quantum Hall physics in quantum gases”
Abstract
Over the past forty years, following the discovery of the fractional quantum Hall (FQH) effect in two-dimensional electron gases, significant efforts have been made to detect fractionally charged quasiparticles (anyons), which obey exchange statistics distinct from those of bosons and fermions. Research into FQH physics has extended beyond electronic systems to alternative platforms suitable for quantum simulation, beginning with theoretical proposals for generating artificial magnetic fields for neutral atoms and later for photons. These efforts have led to the experimental realization of such artificial fields and, more recently, the observation of few-particle FQH states in both atomic and photonic systems. In this talk, after briefly introducing methods for creating artificial magnetic fields for neutral particles, I will highlight recent experiments demonstrating few-particle FQH states and show that, with a simple modification to existing setups, an anyonic quasihole state exhibiting nearly the expected fractional density depletion can be created and observed even in systems with just two or three particles. Finally, I will explore the possibility to observe distinctive FQH-edge properties by examining how these small-scale systems respond to external perturbations
Onur Umucalılar received his B.Sc. (2004) and Ph.D. (2010) degrees in physics from Bilkent University. After seven years of postdoctoral research at the University of Trento (Italy), University of Antwerp (Belgium), and Koç University he joined the Department of Physics at Mimar Sinan Fine Arts University in 2017, where he currently serves as the department head. His research focuses on the simulation of strongly correlated and topological aspects of ultracold atomic and photonic systems. He is the recipient of BAGEP (2018), TÜBA-GEBİP (2020), and TÜBİTAK Incentive (2023) Awards..
Date: 5 March 2025, Wednesday
Time: 15:30
Place: SA-240
All interested are cordially invited.