Triplet-blockaded Josephson supercurrent in double quantum dots
Artikel i vetenskaplig tidskrift, 2020
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.
Författare
Daniël Bouman
TU Delft
Ruben J.J. Van Gulik
TU Delft
Gorm Steffensen
Niels Bohr Institute
Dávid Pataki
Budapesti Muszaki es Gazdasagtudomanyi Egyetem
Péter Boross
Magyar Tudomanyos Akademia
P. Krogstrup
Niels Bohr Institute
J. Nygard
Niels Bohr Institute
Jens Paaske
Niels Bohr Institute
András Pályi
Budapesti Muszaki es Gazdasagtudomanyi Egyetem
Attila Geresdi
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
TU Delft
Physical Review B
24699950 (ISSN) 24699969 (eISSN)
Vol. 102 22 220505Ämneskategorier
Annan fysik
Teoretisk kemi
Den kondenserade materiens fysik
DOI
10.1103/PhysRevB.102.220505
Relaterade dataset
Triplet-blockaded Josephson supercurrent in double quantum dots [dataset]
DOI: 10.5281/zenodo.3978235