Experimental Physics Intern M/F

Alice & Bob is developing the first universal, fault-tolerant quantum computer to solve the world’s hardest problems. The quantum computer we envision building is based on a new kind of superconducting qubit: the Schrödinger cat qubit 🐈‍⬛. In comparison to other superconducting platforms, cat qubits have the astonishing ability to implement quantum error correction autonomously!   We're a diverse team of 250+ brilliant minds from over 35 countries united by a single goal: to revolutionise computing with a practical fault-tolerant quantum machine. Are you ready to take on unprecedented challenges and contribute to revolutionising technology? Join us, and let's shape the future of quantum computing together! Responsibilities: • Develop and set up the flux noise measurement experiment - Design and assemble the cryogenic and RF measurement chain (wiring, filtering, amplification, instrumentation) - Implement and document the measurement and control software in Python • Characterise flux noise measurement chips - Calibrate the flux-tunable resonators (frequency vs. flux, operating point, PDH lock parameters) - Measure the flux noise power spectral density and extract the relevant metrics • Analyse the limitations to broadband operation - Model and measure the feedback loop bandwidth, latencies and noise contributions of the readout chain - Identify the dominant physical and instrumental limits across the frequency band • Propose and test solutions to extend the measurement bandwidth - Evaluate alternative locking, readout or analysis schemes - Implement and validate the most promising approaches experimentally • Report and share results - Document experiments, analyses and conclusions in the team's internal tools - Present progress and findings to the HERMES team Requirements: You are a Master's student in physics, engineering physics or electrical/electronics engineering, with a strong interest in experimental work. You combine a good theoretical grasp of electromagnetism and microwave systems with practical programming skills, and are comfortable building, operating and troubleshooting a measurement setup. • LANGUAGES : Proficient in English • EXPERIENCE : Prior lab or project experience in RF/microwave measurements or low-temperature physics; experience with cryostats or superconducting quantum circuits is a plus • Solid understanding of magnetic fields, flux and electromagnetic coupling • Knowledge of microwave engineering: waveguides, resonators, transmission lines, S-parameters • Proficiency in Python for instrument control, data acquisition and analysis • Understanding of feedback and control loops (gain, bandwidth, latency, stability) • Familiarity with noise characterisation and spectral analysis (power spectral density) • Hands-on experimental skills: assembling and debugging measurement setups • Rigour in documenting experiments and analysing results • Autonomy, curiosity and a problem-solving mindset