With the rise of circuit quantum electrodynamics (cQED), superconducting qubits have become a leading platform for scalable quantum processors, where information is encoded and measured using microwave photons (4–8 GHz). Developing a fast, efficient single microwave photon detector is thus crucial for quantum computing, communication, and sensing. Conventional photon detectors rely on semiconductor materials matched to optical frequencies, but this approach fails at microwave frequencies since these photons have ~10⁵ times less energy. We recently addressed this challenge by creating a microwave photon-to-electron converter, where a superconducting tunnel junction functions as a voltage-tunable quantum absorber via photon-assisted tunneling. We further devised a method to detect the single charge generated upon photon absorption, enabling single-photon sensitivity. We now seek a motivated student to use this detector for innovative measurements of superconducting qubits. The project involves fabricating a hybrid device combining granular aluminum microwave circuits with a qubit, using nanofabrication techniques (e-beam lithography, metal evaporation). Measurements will occur in a new dilution refrigerator (20 mK) with advanced electronics. This work will advance quantum technologies and offer hands-on experience highly valued for a career in quantum science.