Supercurrent in a double quantum dot

Abstract

We demonstrate the Josephson effect in a serial double quantum dot defined in a nanowire with epitaxial superconducting leads. The supercurrent stability diagram adopts a honeycomb pattern with electron-hole and left-right reflection symmetry. We observe sharp discontinuities in the magnitude of the critical current, $I_c$, as a function of dot occupation, related to doublet to singlet ground state transitions. Detuning of the energy levels offers a tuning knob for $I_c$, which attains a maximum at zero detuning. The consistency between experiment and theory indicates that our device is a faithful realization of the two-impurity Anderson model.

6 pages, 5 figures, Supplemental Material available as ancillary file

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Cited by in corpus (45)

• From Andreev to Majorana bound states in hybrid superconductor-semiconductor nanowires
• The Josephson diode effect in supercurrent interferometers
• The Anderson-Josephson quantum dot -- A theory perspective
• Two-Impurity Yu-Shiba-Rusinov States in Coupled Quantum Dots
• Triplet-blockaded Josephson supercurrent in double quantum dots
• Excitations in a superconducting Coulombic energy gap
• Entangling Spins in Double Quantum Dots and Majorana Bound States
• Generalized atomic limit of a double quantum dot coupled to superconducting leads
• Anomalous Josephson current through a driven double quantum dot
• Direct Transport between Superconducting Subgap States in a Double Quantum Dot
• Josephson junctions in double nanowires bridged by in-situ deposited superconductors
• Fermion-parity qubit in a proximitized double quantum dot
• Supercurrent through a spin-split quasi-ballistic point contact in an InAs nanowire
• Inductive microwave response of Yu-Shiba-Rusinov states
• Simple quantum graphs proposal for quantum devices
• Josephson current via spin and orbital states of a tunable double quantum dot
• Anomalous Fano Resonance in Double Quantum Dot System Coupled to Superconductor
• Transient effects in double quantum dot sandwiched laterally between superconducting and metallic leads
• Temperature Induced Shifts of Yu-Shiba-Rusinov Resonances in Nanowire-Based Hybrid Quantum Dots
• Majorana modes in quantum dots coupled via a floating superconducting island
• Field-free Josephson diode effect in interacting chiral quantum dot junctions
• Intermediate states in Andreev bound state fusion
• Supercurrent through an Andreev trimer
• Double-quantum-dot Andreev molecules: Phase diagrams and critical evaluation of effective models
• Full Counting Statistics of Yu-Shiba-Rusinov Bound States
• Subgap dynamics of double quantum dot coupled between superconducting and normal leads
• Josephson junction π-0 transition induced by orbital hybridization in a double quantum dot
• Impurity Knight shift in quantum dot Josephson junctions
• Phase and Thermal Driven Transport across T-Shaped Double Quantum Dot Josephson Junction
• Hidden symmetry in interacting-quantum-dot-based multi-terminal Josephson junctions
• Symmetry-controlled singlet-triplet transition in a double-barrier quantum ring
• Interferometry of multi-level systems: rate-equation approach for a charge qudit
• Second Order Perturbation Theory for a Superconducting Double Quantum Dot
• Yu-Shiba-Rusinov states, the BCS-BEC crossover, and the exact solution in the flat-band limit
• Strongly correlated electrons in superconducting islands with fluctuating Cooper pairs
• YSR Bond Qubit in a Double Quantum Dot with cQED Operation
• Transport in Single Quantum Dots: A Review from Linear Response to Nonlinear Regimes
• Resonator induced quantum phase transitions in a hybrid Josephson junction
• Scalable Effective Models for Superconducting Nanostructures: Applications to Double, Triple, and Quadruple Quantum Dots
• Nonreciprocal Equilibrium Josephson Effect of Arbitrary Periodicity from Poor Man's Majorana Zero Modes
• DC Josephson effect between two Yu-Shiba-Rusinov bound states
• Magnetic flux controlled current phase relationship in double Quantum Dot Josephson junction
• Transient triplet blockade in Andreev junction
• Quantum phase transition in a double quantum dot Josephson junction driven by electron-electron interactions
• Fano effect in a thermally induced transport through a triple quantum dot within the Coulomb blockade regime