Direct spectrum analysis using a threshold detector with application to a superconducting circuit
- Submitting institution
-
Royal Holloway and Bedford New College
- Unit of assessment
- 12 - Engineering
- Output identifier
- 34428508
- Type
- D - Journal article
- DOI
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10.1088/1367-2630/16/5/055010
- Title of journal
- New Journal of Physics
- Article number
- 055010
- First page
- -
- Volume
- 16
- Issue
- 055010
- ISSN
- 1367-2630
- Open access status
- Out of scope for open access requirements
- Month of publication
- May
- Year of publication
- 2014
- URL
-
-
- Supplementary information
-
-
- Request cross-referral to
- -
- Output has been delayed by COVID-19
- No
- COVID-19 affected output statement
- -
- Forensic science
- No
- Criminology
- No
- Interdisciplinary
- No
- Number of additional authors
-
2
- Research group(s)
-
-
- Proposed double-weighted
- No
- Reserve for an output with double weighting
- No
- Additional information
- An entirely novel method and device for non-dissipative superconducting 1-bit analog-to-digital conversion approaching the standard quantum limit of sensitivity was developed. Using this new technique we investigated an issue critical to the development of a future quantum computer; the environmental noise spectrum of a superconducting quantum device. The new method immediately directly verified noise spectra that can only otherwise be obtained indirectly from qubit decoherence measurements. Our method has since been discussed in the context of nonlinear nanomechanical resonators, demonstrating the broad potential of our method for direct probing of the quantum limit in solid state devices.
- Author contribution statement
- -
- Non-English
- No
- English abstract
- -
