Robust poor man's Majorana zero modes using Yu-Shiba-Rusinov states
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| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2023
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| author | Zatelli, Francesco van Driel, David Xu, Di Wang, Guanzhong Liu, Chun-Xiao Bordin, Alberto Roovers, Bart Mazur, Grzegorz P. van Loo, Nick Wolff, Jan Cornelis Bozkurt, A. Mert Badawy, Ghada Gazibegovic, Sasa Bakkers, Erik P. A. M. Wimmer, Michael Kouwenhoven, Leo P. Dvir, Tom |
| author_facet | Zatelli, Francesco van Driel, David Xu, Di Wang, Guanzhong Liu, Chun-Xiao Bordin, Alberto Roovers, Bart Mazur, Grzegorz P. van Loo, Nick Wolff, Jan Cornelis Bozkurt, A. Mert Badawy, Ghada Gazibegovic, Sasa Bakkers, Erik P. A. M. Wimmer, Michael Kouwenhoven, Leo P. Dvir, Tom |
| contents | The recent realization of a two-site Kitaev chain featuring "poor man's Majorana" states demonstrates a path forward in the field of topological superconductivity. Harnessing the potential of these states for quantum information processing, however, requires increasing their robustness to external perturbations. Here, we form a two-site Kitaev chain using proximitized quantum dots hosting Yu-Shiba-Rusinov states. The strong hybridization between such states and the superconductor enables the creation of poor man's Majorana states with a gap larger than $70 \mathrm{~μeV}$. It also greatly reduces the charge dispersion compared to Kitaev chains made with non-proximitized quantum dots. The large gap and reduced sensitivity to charge fluctuations will benefit qubit manipulation and demonstration of non-abelian physics using poor man's Majorana states. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_03193 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Robust poor man's Majorana zero modes using Yu-Shiba-Rusinov states Zatelli, Francesco van Driel, David Xu, Di Wang, Guanzhong Liu, Chun-Xiao Bordin, Alberto Roovers, Bart Mazur, Grzegorz P. van Loo, Nick Wolff, Jan Cornelis Bozkurt, A. Mert Badawy, Ghada Gazibegovic, Sasa Bakkers, Erik P. A. M. Wimmer, Michael Kouwenhoven, Leo P. Dvir, Tom Mesoscale and Nanoscale Physics Superconductivity Quantum Physics The recent realization of a two-site Kitaev chain featuring "poor man's Majorana" states demonstrates a path forward in the field of topological superconductivity. Harnessing the potential of these states for quantum information processing, however, requires increasing their robustness to external perturbations. Here, we form a two-site Kitaev chain using proximitized quantum dots hosting Yu-Shiba-Rusinov states. The strong hybridization between such states and the superconductor enables the creation of poor man's Majorana states with a gap larger than $70 \mathrm{~μeV}$. It also greatly reduces the charge dispersion compared to Kitaev chains made with non-proximitized quantum dots. The large gap and reduced sensitivity to charge fluctuations will benefit qubit manipulation and demonstration of non-abelian physics using poor man's Majorana states. |
| title | Robust poor man's Majorana zero modes using Yu-Shiba-Rusinov states |
| topic | Mesoscale and Nanoscale Physics Superconductivity Quantum Physics |
| url | https://arxiv.org/abs/2311.03193 |