QUANTUMatter 2026
- Quantum Computing
- Quantum Technology
The 6th edition of the Quantum Matter International Conference – QUANTUMatter 2026 – is held in Barcelona, Spain. The event aims at gathering the various communities engaged in the science and technologies of quantum information and quantum matter, to foster the incubation of new ideas & collaborations at the forefront of quantum technologies, emerging quantum materials and novel generations of quantum communication protocols, quantum sensing, and quantum simulation.
We are proud to be sponsoring the event and will be present as exhibitors.
Presentation: What is the maximum control line density in a superconducting quantum computer?
Scaling superconducting quantum processors requires increasingly dense cryogenic control wiring, motivating the exploration of microwave structures beyond conventional coaxial geometries. In this presentation, we will outline Bluefors’ efforts towards holistic integration of scalable control wiring, focusing on flexible printed microwave lines within the cryogenic environment. Because this approach substantially reduces the physical separation between control lines, microwave crosstalk allocation becomes a central design constraint. We will illustrate how an analytical transmission-line model, combined with a two-transmon framework, can be used to quantify fidelity loss in an all-microwave universal gate set. We further derive the equal-level far-end crosstalk (ELFEXT) required to meet specified gate-fidelity targets and, using a system-scaling argument, we demonstrate how fidelity constraints bound the number of physical qubits per chip.
Presenter: Massimo Borrelli
Authors: N. K. Tango, M. F. De Guzman, S. Simbierowicz, Y. Henriqson Accordi V. Nuutinen, Russell Lake