ELFT HÍRADÓ

[Szeminárium koordinátor <sem-admin AT szfki.hu>]

SZFI SeminarOroszlány LászlóELTE, Wigner FK SZFIA simple electronic ladder 
model harboring Z4 parafermions Tuesday, 28 November 2023, 10:00, KFKI 
Campus, Bldg. 1, 2nd floor, Conference RoomParafermions are anyons with the 
potential for realizing non-local qubits that are resilient to local 
perturbations. Compared to Majorana zero modes, braiding of parafermions 
implements an extended set of topologically protected quantum gates. This, 
however, comes at the price that parafermionic zero modes can not be realized 
in the absence of strong interactions whose theoretical description is 
challenging. In the present work, we construct a simple lattice model for 
interacting spinful electrons with parafermionic zero energy modes. The 
explicit microscopic nature of the considered model highlights new 
realization avenues for these exotic excitations in recently fabricated 
quantum dot arrays. By density matrix renormalization group calculations, we 
identify a broad range of parameters, with well-localized zero modes, whose 
parafermionic nature is substantiated by their unique 8π periodic Josephson 
spectrum. Minden érdeklődőt szívesen látunk! - Everyone is welcome to 
attend.Attila Nagysem-admin AT szfki.hu