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New paper in Nature Physics!

Nature Physics

In a work published in Nature Physics, Prof. Jelena Klinovaja and Prof. Daniel Loss from the University of Basel and Prof. Yoichi Ando from the University of Cologne have deepen the understanding of superconducting effects in topological insulator nanowires paired with a conventional superconductor. The team successfully observed Crossed Andreev Reflection (CAR), a rare quantum effect where an electron injected at one terminal of a nanowire 'pairs up' with another distant electron, forming a superconducting Cooper pair. This nonlocal effect is a key signature of the long-range superconducting correlations that are a prerequisite for Majorana-based qubits.

Junya Feng, Henry F. Legg, Mahasweta Bagchi, Daniel Loss, Jelena Klinovaja, Yoichi Ando. Long-range crossed Andreev reflection in a topological insulator nanowire proximitized by a superconductor. Nat. Phys. 2025. https://doi.org/10.1038/s41567-025-02806-y

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