activity
20242026
collaborators

8 papers

quant-ph2026

A Versatile Analytical Model for Fast and Accurate Determination of Feedline-Coupled Resonators for Superconducting Qubit Readout

Zhen Luo, Lea Richard, Ivan Tsitsilin +4

Superconducting quantum chips commonly utilize quarter-wavelength (λ/4) transmission line resonators as readout circuits. An analytical model for the accurate determination of res…

quant-ph2026

A Compact Broadband Purcell Filter for Superconducting Quantum Circuits in a 3D Flip-Chip Architecture

Zhen Luo, Lea Richard, Ivan Tsitsilin +4

Fast and high-fidelity qubit readout requires strong coupling between the readout resonator and the feedline. However, such coupling unavoidably enhances qubit decay through the Pu…

quant-ph2026

Scalable Single-Step Generation of W States in 2D Superconducting Qubit Lattices

João H. Romeiro, Federico A. Roy, Niklas Bruckmoser +13

The reliable generation of multi-qubit entanglement is a prerequisite for large-scale quantum information technologies. In particular, W states are a valuable resource owing to the…

quant-ph2025

Superconducting Qubit Gates Robust to Parameter Fluctuations

Emily Wright, Leo Van Damme, Niklas J. Glaser +14

State-of-the-art single-qubit gates on superconducting transmon qubits can achieve the fidelities required for error-corrected computations. However, parameter fluctuations due to…

quant-ph2025

Parametric multi-element coupling architecture for coherent and dissipative control of superconducting qubits

G. B. P. Huber, F. A. Roy, L. Koch +20

As systems for quantum computing keep growing in size and number of qubits, challenges in scaling the control capabilities are becoming increasingly relevant. Efficient schemes to…

quant-ph2025

Sub-Harmonic Control of a Fluxonium Qubit via a Purcell-Protected Flux Line

Johannes Schirk, Florian Wallner, Longxiang Huang +21

Protecting qubits from environmental noise while maintaining strong coupling for fast high-fidelity control is a central challenge for quantum information processing. Here, we demo…