Robust quality factor assessment of high-coherence superconducting qubits

npj Quantum Information 2026 Open access

Read full text
Authors: Andrew Dane, Karthik Balakrishnan, Brent A. Wacaser, Li-Wen Hung, H. J. Mamin, D. Rugar, R. M. Shelby, Conal E. Murray, Kenneth P. Rodbell, J.W. Sleight
DOI: 10.1038/s41534-026-01199-x
Cited by: 3
References: 39

Abstract

Large variations in the energy relaxation time (T 1 ) of superconducting qubits make it difficult to accurately evaluate and compare new qubit materials and fabrication processes, or to perform studies that require precise measurements of energy loss. To address this issue, we present techniques for characterizing qubit quality factors by applying electric fields to TLS in the vicinity of qubits. Introducing low-frequency (

Fields of Study & Subjects

Quantum Information and Cryptography Quantum and electron transport phenomena Physics of Superconductivity and Magnetism

Publication details

Journal / source
npj Quantum Information
Publisher
Springer Science and Business Media LLC
Volume
12
Issue
1
Publication date
28 February 2026
Language
EN