Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Structure and Formation Mechanisms in Tantalum and Niobium Oxides in Superconducting Quantum Circuits

Journal Article · · ACS Nano
 [1];  [2];  [3];  [3];  [3];  [3];  [4];  [5];  [5];  [6];  [7];  [3];  [3];  [4];  [4];  [1];  [2];  [8]
  1. Ames National Laboratory, Ames, Iowa 50011, United States
  2. Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
  3. Superconducting Quantum Materials and Systems Division, Fermi National Accelerator Laboratory, Batavia, Illinois 60510, United States
  4. Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
  5. Rigetti Computing, Berkeley, California 94710, United States
  6. The Materials Analysis Research Laboratory, Iowa State University, Ames Iowa 50011, United States
  7. Department of Physics, Illinois Institute of Technology, Chicago, Illinois 60616, United States
  8. Ames National Laboratory, Ames, Iowa 50011, United States, Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, United States
Not Available
Research Organization:
Ames Laboratory (AMES), Ames, IA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); IIT, Chicago; Iowa State U.; Northwestern U.; Rigetti Computing; Virginia U.
Sponsoring Organization:
US Department of Energy; USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
89243024CSC000002; AC02-07CH11358; AC02-07CH11359
OSTI ID:
2407154
Alternate ID(s):
OSTI ID: 2406617
OSTI ID: 2466233
Report Number(s):
FERMILAB-PUB-24-0627-SQMS-TD; IS-J--11,393; acsnano.4c05251
Journal Information:
ACS Nano, Journal Name: ACS Nano; ISSN 1936-0851
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (53)

Formation and Microwave Losses of Hydrides in Superconducting Niobium Thin Films Resulting from Fluoride Chemical Processing journal April 2024
Chemical Profiles of the Oxides on Tantalum in State of the Art Superconducting Circuits journal May 2023
A two-sublattice model for molten solutions with different tendency for ionization journal February 1985
Thermo-Calc & DICTRA, computational tools for materials science journal June 2002
In-situ transmission electron microscopy investigation on surface oxides thermal stability of niobium journal August 2023
Thermodynamic modeling of the Ta-O system journal March 2022
Thermodynamic evaluation of the Nb–O–Zr system journal March 2007
Material matters in superconducting qubits journal October 2021
EELS of Niobium and Stoichiometric Niobium-Oxide Phases—Part I: Plasmon and Near-Edges Fine Structure journal October 2009
Oxygen K-edge X-ray Absorption Spectra journal April 2020
Near-Field Localization of the Boson Peak on Tantalum Films for Superconducting Quantum Devices journal May 2023
Developing a Chemical and Structural Understanding of the Surface Oxide in a Niobium Superconducting Qubit journal September 2022
Probing Oxidation-Driven Amorphized Surfaces in a Ta(110) Film for Superconducting Qubit journal December 2023
Transition-Metal Chemistry journal September 1961
Wiring up quantum systems journal February 2008
Superconducting quantum bits journal June 2008
In situ observation of filamentary conducting channels in an asymmetric Ta2O5−x/TaO2−x bilayer structure journal September 2013
Understanding the phase-change mechanism of rewritable optical media journal September 2004
New material platform for superconducting transmon qubits with coherence times exceeding 0.3 milliseconds journal March 2021
Towards practical quantum computers: transmon qubit with a lifetime approaching 0.5 milliseconds journal January 2022
Systematic improvements in transmon qubit coherence enabled by niobium surface encapsulation journal April 2024
Quantum supremacy using a programmable superconducting processor journal October 2019
Evidence for the utility of quantum computing before fault tolerance journal June 2023
Microscopic relaxation channels in materials for superconducting qubits journal July 2021
Direct electroplating of copper on tantalum from ionic liquids in high vacuum: origin of the tantalum oxide layer journal January 2012
Commentary: The Materials Project: A materials genome approach to accelerating materials innovation journal July 2013
Surface participation and dielectric loss in superconducting qubits journal October 2015
Elucidating the local atomic and electronic structure of amorphous oxidized superconducting niobium films journal December 2021
TOF-SIMS analysis of decoherence sources in superconducting qubits journal January 2022
Towards understanding two-level-systems in amorphous solids: insights from quantum circuits journal October 2019
Low-loss α-tantalum coplanar waveguide resonators on silicon wafers: fabrication, characterization and surface modification journal May 2024
Localization and Mitigation of Loss in Niobium Superconducting Circuits journal April 2022
Charge-insensitive qubit design derived from the Cooper pair box journal October 2007
Three-Dimensional Superconducting Resonators at T < 20 mK with Photon Lifetimes up to τ = 2 s journal March 2020
Investigation of Microwave Loss Induced by Oxide Regrowth in High- Q Niobium Resonators journal July 2021
Suppressing charge noise decoherence in superconducting charge qubits journal May 2008
Hydrogen as a source of flux noise in SQUIDs journal July 2018
Observation of High Coherence in Josephson Junction Qubits Measured in a Three-Dimensional Circuit QED Architecture journal December 2011
Understanding Quality Factor Degradation in Superconducting Niobium Cavities at Low Microwave Field Amplitudes journal December 2017
Quantum computational chemistry journal March 2020
Moving beyond the Transmon: Noise-Protected Superconducting Quantum Circuits journal September 2021
Evidence of Surface Paramagnetism in Niobium and Consequences for the Superconducting Cavity Surface Impedance journal June 2011
Manufacturing low dissipation superconducting quantum processors conference December 2019
Fluxonium: Single Cooper-Pair Circuit Free of Charge Offsets journal October 2009
Materials challenges and opportunities for quantum computing hardware journal April 2021
Superconducting Qubits: Current State of Play journal March 2020
Materials in superconducting quantum bits journal October 2013
Materials Data on Nb2O5 by Materials Project dataset January 2020
Materials Data on Ta2O5 by Materials Project dataset January 2020
Effects of anisotropy and disorder on the superconducting properties of niobium journal October 2023
Discovery of Nb hydride precipitates in superconducting qubits preprint January 2021
Microscopic Theory of Magnetic Disorder-Induced Decoherence in Superconducting Nb Films preprint January 2021
Quantum computing hardware for HEP algorithms and sensing preprint January 2022