Spectrum analysis with parametrically modulated transmon qubits

Nir Gavrielov; Santiago Oviedo-Casado; Alex Retzker

doi:10.1103/PhysRevResearch.7.L012056

Spectrum analysis with parametrically modulated transmon qubits

Nir Gavrielov^*, Santiago Oviedo-Casado^*, Alex Retzker^*

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Exploring the noise spectrum impacting a qubit and extending its coherence duration are fundamental components of quantum technologies. In this study, we introduce parametric spectroscopy, a method that merges parametric modulation of a qubit's energy gap with dynamical decoupling sequences. The parametric modulation provides high sensitivity to extensive regions of the noise spectrum, while dynamical decoupling reduces the effect of driving noise. Our theoretical study shows that parametric spectroscopy enables access to the difficult high-frequency domain of the flux spectrum in transmons.

Original language	English
Article number	L012056
Journal	Physical Review Research
Volume	7
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevResearch.7.L012056
State	Published - Jan 2025

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© 2025 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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Spectrum analysis with parametrically modulated transmon qubits

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