Dresden 2026 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 15: Topology: Majorana Physics

TT 15.3: Vortrag

Montag, 9. März 2026, 15:30–15:45, HSZ/0105

Scaling up a quantum dot Kitaev chain — Chun-Xiao Liu, Sebastian Miles, Alberto Bordin, Sebastiaan ten Haaf, Greg Mazur, Mert Bozkurt, and •Michael Wimmer — QuTech and Kavli institute of nanoscience, TU Delft, The Netherlands

Superconducting quantum dot devices can be used to implement a Kitaev chain, and tuned reliably into a topological phase. Recent experiments have succesfully implemented two- and three-site Kitaev chains [1,2]. In this talk, I discuss challenges of scaling up to longer chains and how to overcome them. To this end, I will show that the relative phase between sites in a quantum dot Kitaev chain can be adjusted by electrostatic means only. Finally, I will compare our theory to recent experiments.
[1] T. Dvir et al., Nature 614 (2023) 445
[2] S.L.D. ten Haaf et al., Nature 641 (2025) 890

Keywords: Quantum dots; Kitaev chain; Majorana