Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session L08: Superconducting Qubits: Materials, Fabrication and Coherence II
8:00 AM–10:48 AM,
Wednesday, March 4, 2020
Room: 104
Sponsoring
Unit:
DQI
Abstract: L08.00012 : Microwave loss of van der Waals dielectrics in the low-temperature, single-photon regime*
Presenter:
Joel Wang
(Research Laboratory of Electronics, Massachusetts Institute of Technology (MIT))
Authors:
Joel Wang
(Research Laboratory of Electronics, Massachusetts Institute of Technology (MIT))
Megan Yamoah
(Department of Physics, Massachusetts Institute of Technology (MIT))
Qing Li
(Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology (MIT))
Charlotte Boettcher
(Department of Physics, Harvard University)
Bharath Kannan
(Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology (MIT))
David K Kim
(Lincoln Laboratory, Massachusetts Institute of Technology (MIT))
Jonilyn Yoder
(Lincoln Laboratory, Massachusetts Institute of Technology (MIT))
Kenji Watanabe
(Advanced Materials Laboratory, National Institute for Materials Science)
Takashi Taniguchi
(Advanced Materials Laboratory, National Institute for Materials Science)
Terry Philip Orlando
(Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology (MIT))
Simon Gustavsson
(Research Laboratory of Electronics, Massachusetts Institute of Technology (MIT))
Pablo Jarillo-Herrero
(Department of Physics, Massachusetts Institute of Technology (MIT))
William Oliver
(Research Laboratory of Electronics, Department of Physics, Department of Electrical Engineering and Computer Science, Lincoln Laboratory, Massachusetts Institute of Technolog)
Hexagonal boron nitride (hBN), an insulating 2-D(van der Waals) material that features an essentially defect-free bulk and atomically flat surfaces through mechanical exfoliation, may be used to build high-quality Josephson elements and qubit capacitors. We study hBN in the microwave regime via lateral capacitive coupling and parallel plate capacitors. In the single-photon limit, the extracted quality factor of hBN is bounded below at ~ 200,000. Beyond hBN, this measurement technique can also be used to explore new material platforms for superconducting technologies.
*This research was funded in part by the ARO grant No. W911NF-18-1-0116; and by the Department of Defense via MIT Lincoln Laboratory under Air Force Contract No. FA8721-05-C-0002. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of the U.S. Government.
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