Corpus ID: 237374343

Hexagonal Boron Nitride (hBN) as a Low-loss Dielectric for Superconducting Quantum Circuits and Qubits

  title={Hexagonal Boron Nitride (hBN) as a Low-loss Dielectric for Superconducting Quantum Circuits and Qubits},
  author={Joel I-J. Wang and Megan A Yamoah and Qing Li and Amir H. Karamlou and Thao H. Dinh and Bharath Kannan and Jochen Braumueller and David K. Kim and A. Melville and Sarah Muschinske and Bethany M. Niedzielski and K. Serniak and Youngkyu Sung and Roni Winik and Jonilyn L. Yoder and Mollie E. Schwartz and Kenji Watanabe and Takashi Taniguchi and T. P. Orlando and Simon Gustavsson and Pablo Jarillo-Herrero and William D. Oliver},
Dielectrics with low loss at microwave frequencies are imperative for high-coherence solidstate quantum computing platforms. We study the dielectric loss of hexagonal boron nitride (hBN) thin films in the microwave regime by measuring the quality factor of parallel-plate capacitors (PPCs) made of NbSe2-hBN-NbSe2 heterostructures integrated into superconducting circuits. The extracted microwave loss tangent of hBN is bounded to be at most in the mid-10-6 range in the low temperature, single… Expand
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