Physics

Robust poor man's Majorana zero modes using Yu-Shiba-Rusinov states

F. Zatelli, D. V. Driel, et al.

Discover how a pioneering two-site Kitaev chain, utilizing Yu-Shiba-Rusinov states in proximitized quantum dots, achieves robust Majorana states with exceptional stability—work led by Francesco Zatelli and his team. Their findings have exciting implications for topological superconductivity and qubit development.

00:00

Playback language: English

Index

Abstract

Kitaev chains in quantum dot-superconductor arrays are a promising platform for the realization of topological superconductivity. This paper demonstrates a two-site Kitaev chain using Yu-Shiba-Rusinov (YSR) states in proximitized quantum dots, achieving poor man's Majorana states with a gap exceeding 70 μeV and significantly reduced sensitivity to charge fluctuations. This improved robustness paves the way for longer Kitaev chains, parity qubits, and the exploration of non-Abelian physics.

Publisher

Nature Communications

Published On

Sep 11, 2024

Authors

Francesco Zatelli, David van Driel, Di Xu, Guanzhong Wang, Chun-Xiao Liu, Alberto Bordin, Bart Roovers, Grzegorz P. Mazur, Nick van Loo, Jan C. Wolff, A. Mert Bozkurt, Ghada Badawy, Sasa Gazibegovic, Erik P. A. M. Bakkers, Michael Wimmer, Leo P. Kouwenhoven, Tom Dvir