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Towards building a large-scale quantum processor

ORAL · Invited

Abstract

In this talk, I will provide an overview of the building blocks of a superconducting circuits-based quantum computer and discuss the work that is ongoing at Chalmers for building a large-scale quantum processor. Throughout the presentation, I will highlight key achievements, including reaching higher coherence, the implementation of a qubit reset protocol, investigations of crosstalk, and the development of a novel two-qubit gate.

Publication: 1. T. Fuchs, et. al. Characterization of simultaneous 2-qubit parametric gate operations on a 25-qubit processor. In preparation<br>2. E. Hogedal, et. al. Fast parametric two-qubit gates for fixed-frequency qubits and tunable couplers. In preparation<br>3. L. Chen, et. al. Fast unconditional reset and leakage reduction in fixed-frequency transmon qubits. Under review. arXiv:2409.16748 (2024) <br>4. S. Kosen, et. al. Signal crosstalk in a flip-chip quantum processor. arXIv:2403.00285, Phys. Rev. X Quantum 5, 030350 (2024). <br>5. A. Osman, et. al. Mitigation of frequency collisions in superconducting quantum processors. Phys. Rev. Reas. 4 15 (2023). <br>6. Biznárová, et. al. Mitigation of interfacial dielectric loss in aluminum-on-silicon superconducting qubits. npj Quantum Inf 10, 78 (2024).

Presenters

  • Giovanna Tancredi

    Chalmers, Chalmers University of Technology, Chalmers Univ of Tech

Authors

  • Giovanna Tancredi

    Chalmers, Chalmers University of Technology, Chalmers Univ of Tech