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Meandered Niobium Diselenide (NbSe<sub>2</sub>) Inductor for Fluxonium Qubit

ORAL

Abstract

Low-loss microwave materials are essential for improving the coherence of superconducting qubits. Single-crystalline two-dimensional van der Waals (vdW) materials have the potential to be used as building blocks for key components such as capacitors, Josephson Junctions (JJ), and inductors for superconducting quantum devices. In this work, we characterize the kinetic inductance of NbSe2 across varying thicknesses in the GHz regime. We then fabricated a fluxonium superconducting qubit consisting of a single Al-AlOx-Al JJ, shunted by a meandered NbSe2 thin-film inductor, and a capacitor. The fabrication process and the microwave characterization of the fluxonium qubit incorporating NbSe2 inductor will be discussed, exploring its potential for high-coherence superconducting quantum processors.

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Presenters

  • Sameia Zaman

    Massachusetts Institute of Technology

Authors

  • Sameia Zaman

    Massachusetts Institute of Technology

  • Joel I-Jan Wang

    Massachusetts Institute of Technology

  • Junyoung An

    Massachusetts Institute of Technology

  • Junghyun Kim

    Massachusetts Institute of Technology

  • Renée DePencier Piñero

    MIT Lincoln Laboratory, Lincoln Laboratory, MIT

  • Thomas R Werkmeister

    Harvard University

  • Chia-Chin Tsai

    Massachusetts Institute of Technology

  • Hung-Yu Tsao

    Massachusetts Institute of Technology

  • Kate Azar

    MIT Lincoln Laboratory

  • Sein Park

    Massachusetts Institute of Technology

  • Daniel Rodan Legrain

    Massachusetts Institute of Technology - MIT

  • Aranya Goswami

    Massachusetts Institute of Technology

  • William P Banner

    Massachusetts Institute of Technology

  • Gabriel Cutter

    Massachusetts Institute of Technology

  • Kenji Watanabe

    National Institute for Materials Science, NIMS, Research Center for Functional Materials, National Institute for Materials Science, Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, Research Center for Functional Materials, National Institute of Material Science, Tsukuba, Japan, National Institute of Materials Science, Advanced Materials Laboratory, National Institute for Materials Science

  • Takashi Taniguchi

    National Institute for Materials Science, International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, International Center for Materials Nanoarchitectonics, National Institute of Material Science, Tsukuba, Japan, Advanced Materials Laboratory, National Institute for Materials Science

  • Terry P Orlando

    Massachusetts Institute of Technology

  • Jeffrey A Grover

    Massachusetts Institute of Technology

  • Kyle Serniak

    MIT Lincoln Laboratory, Lincoln Laboratory, Massachusetts Institute of Technology

  • Pablo Jarillo-Herrero

    Massachusetts Institute of Technology

  • Philip Kim

    Harvard University

  • William D Oliver

    Massachusetts Institute of Technology, Massachusetts Institute of Technology (MIT)