Triplet-blockaded Josephson supercurrent in double quantum dots

Bouman, Daniël (author): Technische Universiteit Delft,Delft University of Technology (TU Delft)

Van Gulik, Ruben J.J. (author): Technische Universiteit Delft,Delft University of Technology (TU Delft)

Pataki, Dávid (author): Budapesti Muszaki es Gazdasagtudomanyi Egyetem,Budapest University of Technology and Economics

Boross, Péter (author): Magyar Tudomanyos Akademia,Hungarian Academy of Sciences

Pályi, András (author): Budapesti Muszaki es Gazdasagtudomanyi Egyetem,Budapest University of Technology and Economics

Geresdi, Attila, 1984 (author): Chalmers tekniska högskola,Chalmers University of Technology,Technische Universiteit Delft,Delft University of Technology (TU Delft)

(creator_code:org_t)

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Abstract Subject headings

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.

By the author/editor: Bouman, Daniël; Van Gulik, Ruben ...; Steffensen, Gorm; Pataki, Dávid; Boross, Péter; Krogstrup, P.; show more...; Nygard, J.; Paaske, Jens; Pályi, András; Geresdi, Attila, ...; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Other Physics To ...

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Theoretical Chem ...

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Condensed Matter ...

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