Raymond Simmonds

Publications

Interface-dependent microwave loss in superconducting tantalum and niobium films sputtered on c-plane sapphire

September 25, 2025

Author(s)

Trevyn Larson, Akash Dixit, Raymond Simmonds, Florent Lecocq, Jinsu Oh, Lin Zhou, Anthony McFadden

Quantum coherence in superconducting circuits has increased steadily over the last decades because of a growing understanding of the various loss mechanisms. Re

Fabrication and characterization of low-loss Al/Si/Al parallel plate capacitors for superconducting quantum information applications

January 22, 2025

Author(s)

Raymond Simmonds, Sudhir Sahu, Trevyn Larson, Florent Lecocq, Tongyu Zhao, Anthony McFadden

The application of parallel plate capacitors composed of aluminum-contacted, crystalline silicon fins for use in superconducting circuits is explored by

Signatures of a spin-active interface and a locally enhanced Zeeman field in a superconductor-chiral material heterostructure

August 23, 2024

Author(s)

Anthony McFadden, Raymond Simmonds

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Patents (2018-Present)

A line drawing showing the entire structure, which includes the resonator and supporting substrate.

Reticulated Resonator, Process for Making and Use of Same

NIST Inventors

Raymond Simmonds , Katarina Cicak , Cindy Regal and Thomas Purdy

Mechanical resonators are widely used in wireless receivers, biosensors, and timing and frequency control. Besides industry, in recent years in academia there is also considerable interest for ultrahigh precision sensing and fundamental science. A mechanical resonator with the following three

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Raymond Simmonds (Fed)

Publications

Patents (2018-Present)