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20132026
most citedSystematic Improvements in Transmon Qubit Coherence Enabled by Niobium Surface Encapsulation

123 citations · 287 across the 12 of their papers we have counts for

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quant-ph2026

Real-Time Adaptive Filtering and the Boxcar Limit in Superconducting Qubit Readout

Hans Johnson, Tanay Roy, Leonardo Bove +3

Control and readout systems for superconducting quantum computing support real-time control and high-fidelity qubit-state discrimination. We examine when additional digital process…

quant-ph2025

Ultracoherent superconducting cavity-based multiqudit platform with error-resilient control

Taeyoon Kim, Tanay Roy, Xinyuan You +26

Realizing the promise of quantum computing requires simultaneously increasing Hilbert-space size and coherence times. While qubit-based architectures have long been the dominant pa…

quant-ph2024

Demonstrating the Potential of Adaptive LMS Filtering on FPGA-Based Qubit Control Platforms for Improved Qubit Readout in 2D and 3D Quantum Processing Units

Hans Johnson, Nicholas Bornman, Taeyoon Kim +3

Advancements in quantum computing underscore the critical need for sophisticated qubit readout techniques to accurately discern quantum states. This abstract presents our research…

quant-ph2024★ 18 cited

Crosstalk-Robust Quantum Control in Multimode Bosonic Systems

Xinyuan You, Yunwei Lu, Taeyoon Kim +10

High-coherence superconducting cavities offer a hardware-efficient platform for quantum information processing. To achieve universal operations of these bosonic modes, the requisit…

quant-ph2023★ 123 cited

Systematic Improvements in Transmon Qubit Coherence Enabled by Niobium Surface Encapsulation

Mustafa Bal, Akshay A. Murthy, Shaojiang Zhu +37

We present a novel transmon qubit fabrication technique that yields systematic improvements in T relaxation times. We fabricate devices using an encapsulation strategy that inv…

quant-ph2022★ 24 cited

Disentangling the sources of ionizing radiation in superconducting qubits

L. Cardani, I. Colantoni, A. Cruciani +27

Radioactivity was recently discovered as a source of decoherence and correlated errors for the real-world implementation of superconducting quantum processors. In this work, we mea…