Improved superconducting qubit coherence using titanium nitride
Publication type: Journal Article
Publication date: 2013-07-01
scimago Q1
wos Q2
SJR: 0.896
CiteScore: 6.1
Impact factor: 3.6
ISSN: 00036951, 10773118
Physics and Astronomy (miscellaneous)
Abstract
We demonstrate enhanced relaxation and dephasing times of transmon qubits, up to ∼60 μs, by fabricating the interdigitated shunting capacitors using titanium nitride (TiN). Compared to qubits made with lift-off aluminum deposited simultaneously with the Josephson junction, this represents as much as a six-fold improvement and provides evidence that surface losses from two-level system (TLS) defects residing at or near interfaces contribute to decoherence. Concurrently, we observe an anomalous temperature dependent frequency shift of TiN resonators, which is inconsistent with the predicted TLS model.
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Total citations:
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Citations from 2024:
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(16.25%)
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Chang J. B. et al. Improved superconducting qubit coherence using titanium nitride // Applied Physics Letters. 2013. Vol. 103. No. 1. p. 12602.
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Chang J. B., Vissers M. R., Córcoles A. D., Sandberg M., Gao J., Abraham D. W., Chow J. M., Gambetta J. M., Beth Rothwell M., Keefe G. A., Steffen M., Pappas D. P. Improved superconducting qubit coherence using titanium nitride // Applied Physics Letters. 2013. Vol. 103. No. 1. p. 12602.
Cite this
RIS
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TY - JOUR
DO - 10.1063/1.4813269
UR - https://doi.org/10.1063/1.4813269
TI - Improved superconducting qubit coherence using titanium nitride
T2 - Applied Physics Letters
AU - Chang, Josephine B
AU - Vissers, Michael R.
AU - Córcoles, Antonio D.
AU - Sandberg, Martin
AU - Gao, Jiansong
AU - Abraham, David W.
AU - Chow, Jerry M.
AU - Gambetta, Jay M.
AU - Beth Rothwell, Mary
AU - Keefe, George A.
AU - Steffen, Matthias
AU - Pappas, David P.
PY - 2013
DA - 2013/07/01
PB - AIP Publishing
SP - 12602
IS - 1
VL - 103
SN - 0003-6951
SN - 1077-3118
ER -
Cite this
BibTex (up to 50 authors)
Copy
@article{2013_Chang,
author = {Josephine B Chang and Michael R. Vissers and Antonio D. Córcoles and Martin Sandberg and Jiansong Gao and David W. Abraham and Jerry M. Chow and Jay M. Gambetta and Mary Beth Rothwell and George A. Keefe and Matthias Steffen and David P. Pappas},
title = {Improved superconducting qubit coherence using titanium nitride},
journal = {Applied Physics Letters},
year = {2013},
volume = {103},
publisher = {AIP Publishing},
month = {jul},
url = {https://doi.org/10.1063/1.4813269},
number = {1},
pages = {12602},
doi = {10.1063/1.4813269}
}
Cite this
MLA
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Chang, Josephine B., et al. “Improved superconducting qubit coherence using titanium nitride.” Applied Physics Letters, vol. 103, no. 1, Jul. 2013, p. 12602. https://doi.org/10.1063/1.4813269.