Print Email Facebook Twitter Crossed Andreev Reflection and Elastic Cotunneling in Three Quantum Dots Coupled by Superconductors Title Crossed Andreev Reflection and Elastic Cotunneling in Three Quantum Dots Coupled by Superconductors Author Bordin, A. (TU Delft Communication QuTech; TU Delft QRD/Kouwenhoven Lab; Kavli institute of nanoscience Delft) Li, Xiang (Kavli institute of nanoscience Delft) van Driel, D. (TU Delft QRD/Kouwenhoven Lab; Kavli institute of nanoscience Delft) Wolff, J.C. (TU Delft QRD/Kouwenhoven Lab; Kavli institute of nanoscience Delft) Wang, Q. (TU Delft QRD/Goswami Lab; Kavli institute of nanoscience Delft) ten Haaf, S.L.D. (TU Delft QRD/Goswami Lab; Kavli institute of nanoscience Delft) Wang, Guanzhong (TU Delft QRD/Wimmer Group; Kavli institute of nanoscience Delft) van Loo, N. (TU Delft QRD/Kouwenhoven Lab; Kavli institute of nanoscience Delft) Kouwenhoven, Leo P. (TU Delft QN/Kouwenhoven Lab; Kavli institute of nanoscience Delft) Dvir, T. (TU Delft Qubit Research Division; Kavli institute of nanoscience Delft) Department Qubit Research Division Date 2024 Abstract The formation of a topological superconducting phase in a quantum-dot-based Kitaev chain requires nearest neighbor crossed Andreev reflection and elastic cotunneling. Here, we report on a hybrid InSb nanowire in a three-site Kitaev chain geometry - the smallest system with well-defined bulk and edge - where two superconductor-semiconductor hybrids separate three quantum dots. We demonstrate pairwise crossed Andreev reflection and elastic cotunneling between both pairs of neighboring dots and show sequential tunneling processes involving all three quantum dots. These results are the next step toward the realization of topological superconductivity in long Kitaev chain devices with many coupled quantum dots. To reference this document use: http://resolver.tudelft.nl/uuid:1d8626b6-1f08-4f27-85b9-b1d8f1626dfd DOI https://doi.org/10.1103/PhysRevLett.132.056602 ISSN 0031-9007 Source Physical Review Letters, 132 (5) Part of collection Institutional Repository Document type journal article Rights © 2024 A. Bordin, Xiang Li, D. van Driel, J.C. Wolff, Q. Wang, S.L.D. ten Haaf, Guanzhong Wang, N. van Loo, Leo P. Kouwenhoven, T. Dvir Files PDF PhysRevLett.132.056602.pdf 942.89 KB Close viewer /islandora/object/uuid:1d8626b6-1f08-4f27-85b9-b1d8f1626dfd/datastream/OBJ/view