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Online Seminar: Strong tunable coupling between two distant superconducting spin qubits

Online Seminar: Deterministic Benchmarking of Quantum Gates

Coupling spin qubits over long distances remains challenging due to their localized nature. This seminar presents recent research from Prof. Leo P. Kouwenhoven & Christian Kraglund Andersen labs at TU Deft, demonstrating strong supercurrent-mediated longitudinal coupling between two distant superconducting spin qubits. This coupling, which is gate- and flux-tunable and switchable in situ, highlights the potential of integrating microscopic spin states into superconducting qubit architectures, paving the way for fast two-qubit gates between distant spins. The findings combine the strengths of semiconductors and superconducting circuits.

Nat. Phys. 20, 1158–1163 (2024)

The seminar is presented by Dr. Jaap Joachim Wesdorp, with Dr. Tom Dvir co-hosting the event.

Our speakers – 

  • Dr. Jaap Joachim Wesdorp
    Quantum Engineer, IQM
    Jaap did his PhD in the Kouwenhoven and Andersen lab in Delft University of Technology in the Netherlands, focusing on studying the physics of superconductor-semiconductor nanowire Josephson junctions with superconducting circuits. Specifically, the work focused on the spin properties of Andreev bound states, which have recently emerged as a platform for a new type of qubit, so called superconducting spin qubits. Currently, Jaap works as a quantum engineer at IQM quantum computers.
  • Dr. Tom Dvir
    Product Research Physicist, Quantum Machines
    Tom is a product research physicist at Quantum Machines. He graduated in 2020 from the Hebrew University in Jerusalem, where he researched the superconductivity of two-dimensional materials. He later conducted his post-doctoral research at the lab of Prof. Kouwenhoven in TU Delft, looking into Majorana-bound states in quantum-dot chains. Since joining Quantum Machines, Tom’s focuses on product-specific research and creating calibration graphs for superconducting qubits using Quantum Machines’ advanced controller.

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