Spectrum analysis with parametrically modulated transmon qubits

doi:10.1103/PhysRevResearch.7.L012056

Spectrum analysis with parametrically modulated transmon qubits

2025-03-06

0

OA

AI

N

Nir Gavrielov

S

Santiago Oviedo-Casado *

A

Alex Retzker *

DOI：10.1103/PhysRevResearch.7.L012056

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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.

Keyword:

QUANTUM

SPECTROSCOPY

Spectrum analysis with parametrically modulated transmon qubits

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