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Decoherence of a superconducting qubit due to bias noise

Martinis, John M., Nam, S., Aumentado, J., Lang, K. M., Urbina, C.·2003·Physical Review B

Abstract

We calculate for the current-biased Josephson junction the decoherence of the qubit state from noise and dissipation. The effect of dissipation can be entirely accounted for through a semiclassical noise model that appropriately includes the effect of zero-point and thermal fluctuations from dissipation. The magnitude and frequency dependence of this dissipation can be fully evaluated with this model to obtain design constraints for small decoherence. We also calculate decoherence from spin echo and Rabi control sequences and show they are much less sensitive to low-frequency noise than for a Ramsey sequence. We predict small decoherence rates from $1/f$ noise of charge, critical current, and flux based on noise measurements in prior experiments. Our results indicate this system is a good candidate for a solid-state quantum computer.

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Metadata

Authors
Martinis, J. M., Nam, S., Aumentado, J., Lang, K. M., & Urbina, C.
Venue
Physical Review B
Published
2003-03-25
Volume
67
Issue
9
ISSN
  • 0163-1829 (ISSN-L)
  • 1095-3795
OpenAlex
W1992086940
Cited by
301
References
16
FWCI
14.84
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Decoherence of a superconducting qubit due to bias noise. https://app.cochat.ai/papers/10.1103/physrevb.67.094510
The paper
Martinis, J. M., Nam, S., Aumentado, J., Lang, K. M., & Urbina, C. (2003). Decoherence of a superconducting qubit due to bias noise. Physical Review B. https://doi.org/10.1103/physrevb.67.094510

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.