Experimental Physics Intern M/F (Quantum Hardware)

Location: Hybrid in Aubervilliers, France

Company

Alice & Bob is developing a universal, fault-tolerant quantum computer based on superconducting Schrödinger cat qubits and autonomous quantum error correction.

What you will do

• Design and assemble the cryogenic and RF measurement chain, including wiring, filtering, amplification, and instrumentation.
• Implement and document measurement and control software in Python.
• Calibrate flux-tunable resonators and measure flux noise power spectral density and related metrics.
• Model and measure feedback-loop bandwidth, latency, and readout-chain noise contributions to identify broadband-operation limits.
• Evaluate, implement, and experimentally validate alternative locking, readout, or analysis approaches.
• Document experiments and present progress and findings to the HERMES team while working with quantum and RF characterisation engineers.

Requirements

• Master's student in physics, engineering physics, or electrical/electronics engineering with a strong interest in experimental work.
• Good theoretical understanding of electromagnetism and microwave systems, combined with practical programming skills.
• Proficient English.
• Prior lab or project experience in RF/microwave measurements or low-temperature physics.
• Solid understanding of magnetic fields, flux, and electromagnetic coupling.
• Knowledge of microwave engineering, including waveguides, resonators, transmission lines, and S-parameters.
• Proficiency in Python for instrument control, data acquisition, and analysis.
• Understanding of feedback and control loops, including gain, bandwidth, latency, and stability.
• Familiarity with noise characterisation and spectral analysis, including power spectral density; hands-on ability to assemble and debug measurement setups; rigour in documentation and analysis; autonomy, curiosity, and a problem-solving mindset.

Nice to have

• Experience with cryostats or superconducting quantum circuits.

Culture & Benefits

• Six-month internship starting between January and March 2027.
• One day off per month.
• Half of transportation costs covered according to French law.
• Meal vouchers through Swile and access to a fully equipped, regularly stocked kitchen.
• Early-stage startup environment with knowledge sharing, learning, and space to develop new ideas.

Hiring process

• Parts of the hiring process may use AI tools to review applications, analyse resumes, assess responses, and identify potential inconsistencies.
• Final hiring decisions are made by humans.