Speaker
Description
In recent years, superconducting qubits have advanced significantly in both computing and sensing applications for HEP. This progress has brought increasingly intricate hardware configurations which strongly influence device performance. Qubit coherence, environmental backgrounds, and overall control fidelity together limit the capability of qubit-based sensors, improving these areas enables highly sensitive detection mechanisms. Environmental controls such as shielding, attenuation, and filtering therefore become increasingly important as devices scale up. While many best practices exist, no standard guide explains how individual components and their placement influence device performance. In this talk, we discuss a carefully constructed study spanning multiple runs and qubits, in which qubit performance metrics such as coherence and readout fidelity improved dramatically as we improved the shielding, attenuation, and filtering. We also discuss how far these results transfer across experiments and fridges