Print Email Facebook Twitter Triplet-blockaded Josephson supercurrent in double quantum dots Title Triplet-blockaded Josephson supercurrent in double quantum dots Author Bouman, D. (TU Delft BUS/Quantum Delft; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) van Gulik, R.J.J. (TU Delft BUS/Quantum Delft; Kavli institute of nanoscience Delft) Steffensen, Gorm (University of Copenhagen) Pataki, Dávid (Budapest University of Technologyand Economics, Budapest) Boross, Péter (Wigner Research Centre for Physics, Budapest) Krogstrup, Peter (University of Copenhagen) Nygård, Jesper (University of Copenhagen) Paaske, Jens (University of Copenhagen) Pályi, András (Budapest University of Technologyand Economics, Budapest) Geresdi, A. (TU Delft QRD/Geresdi Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft; Chalmers University of Technology) Date 2020 Abstract Serial double quantum dots created in semiconductor nanostructures provide a versatile platform for investigating two-electron spin quantum states, which can be tuned by electrostatic gating and an external magnetic field. In this Rapid Communication, we directly measure the supercurrent reversal between adjacent charge states of an InAs nanowire double quantum dot with superconducting leads, in good agreement with theoretical models. In the even charge parity sector, we observe a supercurrent blockade with increasing magnetic field, corresponding to the spin singlet to triplet transition. Our results demonstrate a direct spin to supercurrent conversion, the superconducting equivalent of the Pauli spin blockade. This effect can be exploited in hybrid quantum architectures coupling the quantum states of spin systems and superconducting circuits. To reference this document use: http://resolver.tudelft.nl/uuid:f409db8f-18a3-4232-8248-a7ab48eff82e DOI https://doi.org/10.1103/PhysRevB.102.220505 ISSN 2469-9950 Source Physical Review B, 102 (22) Part of collection Institutional Repository Document type journal article Rights © 2020 D. Bouman, R.J.J. van Gulik, Gorm Steffensen, Dávid Pataki, Péter Boross, Peter Krogstrup, Jesper Nygård, Jens Paaske, András Pályi, A. Geresdi Files PDF PhysRevB.102.220505.pdf 991.4 KB Close viewer /islandora/object/uuid:f409db8f-18a3-4232-8248-a7ab48eff82e/datastream/OBJ/view