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Long-range crossed Andreev reflection in a topological insulator nanowire proximitized by a superconductor

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Nature Physics, Published online: 11 March 2025; doi:10.1038/s41567-025-02806-y

Crossed Andreev reflection is an important process for using the inherent entanglement within a Cooper pair. Now this effect has been observed in a topological insulator nanowire, which has implications for topological quantum computing.