6 papers
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…
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…
Niobium Air Bridges as Low-Loss Components for Superconducting Quantum Hardware
N. Bruckmoser, L. Koch, I. Tsitsilin +12
Scaling up superconducting quantum processors requires a high routing density for readout and control lines, relying on low-loss interconnects to maintain design flexibility and de…
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…
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…
Parity-dependent state transfer for direct entanglement generation
Federico A. Roy, João H. Romeiro, Leon Koch +19
As quantum information technologies advance, challenges in scaling and connectivity persist, particularly the need for long-range qubit connectivity and efficient entanglement gene…