КОЛОКВИЈУМ: Проф. др Хрвоје Буљан

У оквиру традиционалног колоквијума Института за физику у Београду, у понедељак, 21. маја у 12 часова у сали „Звонко Марић“ биће одржано предавање проф. др Хрвоја Буљана (Физички одсек Природословно-математичког факултета Свеучилишта у Загребу). Он ће одржати предавање под насловом:

„Engineering Weyl semimetals and anyons“


In this talk we will present two topics of research in our group related to synthetic topological quantum matter [1]: topological phases in 3D optical lattices, more specifically a proposal for experimental realization of Weyl semimetals in ultracold atomic gases [2], and anyons [3,4]. We will present one possible route to engineer anyons in a 2D electron gas in a strong magnetic field sandwiched between materials with high magnetic permeability, which induce electron-electron vector interactions to engineer charged flux-tube composites [3]. We will also discuss intriguing concepts related to extracting observables from anyonic wavefunctions [4]: one can show that the momentum distribution is not a proper observable for a system of anyons [4], even though this observable was crucial for the experimental demonstration of Bose-Einsten condensation or ultracold fermions in time of flight measurements. We will show how time-of-flight measurements can be used to extract anyonic statistics [4].

[1] N. Goldman, G. Juzeliunas, P. Ohberg, I. B. Spielman, Rep. Prog. Phys. 77, 126401 (2014).
[2] T. Dubček, C. J. Kennedy, L. Lu, W. Ketterle, M. Soljačić, and H. Buljan, Phys. Rev. Lett. 114, 225301 (2015).
[3] M. Todorić, D. Jukić, D. Radić, M. Soljačić, and H. Buljan, arXiv:1710.10108 (2017).
[4] T. Dubček, B. Klajn, R. Pezer, H. Buljan, and D. Jukić, Phys. Rev. A 97, 011601(R) (2018).