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20202024
most citedSystematic Improvements in Transmon Qubit Coherence Enabled by Niobium Surface Encapsulation

123 citations · 288 across the 19 of their papers we have counts for

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5 papers · 1 filter

cond-mat.mtrl-sci2024★ 6 cited

Enhanced Superconducting Qubit Performance Through Ammonium Fluoride Etch

Cameron J. Kopas, Dominic P. Goronzy, Thang Pham +19

The performance of superconducting qubits is often limited by dissipation and two-level systems (TLS) losses. The dominant sources of these losses are believed to originate from am…

quant-ph2024

Precision frequency tuning of tunable transmon qubits using alternating-bias assisted annealing

Xiqiao Wang, Joel Howard, Eyob A. Sete +13

Superconducting quantum processors are one of the leading platforms for realizing scalable fault-tolerant quantum computation (FTQC). The recent demonstration of post-fabrication t…

cond-mat.mes-hall2024★ 2 cited

Transport signatures of phase fluctuations in superconducting qubits

Maxwell Wisne, Yanpei Deng, Hilal Cansizoglu +3

Josephson junctions supply the nonlinear inductance element in superconducting qubits. In the widely used transmon configuration, where the junction is shunted by a large capacitor…

cond-mat.mtrl-sci2024★ 20 cited

Formation and Microwave Losses of Hydrides in Superconducting Niobium Thin Films Resulting from Fluoride Chemical Processing

Carlos G. Torres-Castanedo, Dominic P. Goronzy, Thang Pham +18

Superconducting Nb thin films have recently attracted significant attention due to their utility for quantum information technologies. In the processing of Nb thin films, fluoride-…

physics.app-ph2024★ 23 cited

Alternating Bias Assisted Annealing of Amorphous Oxide Tunnel Junctions

David P. Pappas, Mark Field, Cameron Kopas +10

We demonstrate a transformational technique for controllably tuning the electrical properties of fabricated thermally oxidized amorphous aluminum-oxide tunnel junctions. Using conv…