activity
20232026
most citedEfficient decoupling of a non-linear qubit mode from its environment

10 citations · 30 across the 7 of their papers we have counts for

collaborators

8 papers

quant-ph2026

Accurate gap control of 3D-integrated superconducting quantum circuits using asymmetric indium architecture and multi-angle flip-chip bonding

L. Richard, N. Bruckmoser, J. Feigl +8

Flip-chip 3D integration is a key enabling technology for overcoming the routing and layout constraints of planar superconducting quantum processors, but it requires accurate and u…

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 reso…

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-ph2025★ 3 cited

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…

quant-ph2024★ 4 cited

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…

quant-ph2024★ 7 cited

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…

quant-ph2024★ 6 cited

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-ph2023★ 10 cited

Efficient decoupling of a non-linear qubit mode from its environment

Frederik Pfeiffer, Max Werninghaus, Christian Schweizer +21

To control and measure the state of a quantum system it must necessarily be coupled to external degrees of freedom. This inevitably leads to spontaneous emission via the Purcell ef…