Quantum RF Systems Intern: Design & Test

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 200+ brilliant minds from over 30 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!

As anRF Sub Systems Design & Characterization Intern, your mission is to support the design, development, integration, and validation of RF hardware used to control Quantum bits (Qubits). Guided by senior engineers, you will gain hands-on experience on leveraging performance RF instruments, characterizing cryogenic components, and automating test workflows.

Following the candidate’s abilities, there will be 3 mainpossibletopicsto focus on:

• Cryogenic Bias tee footprint reduction
• RF Readout chain optimization at room temperature
• RF Readout chain optimization at cryogenic temperatures

As part of the team, you will contribute tosolving technical challenges involving the entire signal chain from room temperature to cryogenics, by designing RF sub systems prototypes on PCB, manipulating different instruments toacquiredata, and gathering inputs from your market tech watch. Working closely with cross functional teams of engineers and scientists,you’llhelp to improve system performance and develop the next generation of quantum hardware platforms.

This internship will start in September 2026for a duration of 5-6 months.

Responsibilities:

• Integrate and test control electronics and instrumentation (RF, DC, etc.) with the help ofseniorengineers.
• Characterize,simulate,anddesign
  
  RF hardware at room temperature and cryogenic temperatures(bias tees, filters, …)
• Rapidly designand prototype sub-systems for
  
  Qubits control,considering the electromechanical integration inside of the cryostat or the racks.
• Analyze and compare different RFcomponentmanufacturing technologies (substrates, processes, connectors, packaging,cables,etc.) in terms of performance,EMC,accessibility, and feasibility.
• Assist with test bench setup, cabling, equipmentmaintenanceand monitoring.
• Perform lab measurements using RF bench equipment (VNAs and analyzers).
• Define,optimize,andautomatethe test programs needed to qualify orvalidatesystem hardware conformity.
• Preparing complete,well-documented test plansandreportsresults.
• Monitor instrument andcomponentstock.
• Collaborate with multidisciplinary teams to develop and integrate systemsrequiredto control quantum chip architectures.

Requirements:

• Engineering or master's student (4-5 years of higher education) specializing in microwave frequencies, RF electronics, telecommunications,appliedphysics, computing, instrumentation, or related fields.
• Solid understanding of RF systems, S-Parameters, andwave propagation.
• Experience with RF test equipment, signal characterization and analysis techniques (VNA, Spectrum Analyzer, and oscilloscope).
• Experience with RF cad tools (HFSS, Keysight ADS,…)
• Familiarity with Python for RF data analysis and post-processing (Num Py, scikit-rf, matplotlib).
• Familiarity ofusing basic laband prototyping tools(multimeter, torque driver, power tools, soldering iron).
• Ability to work as part of a team, with a strong spirit of innovation.
• Excellent communication skills in English, both written and oral. (English level B1/B2)

Benefits:

- 1 day off per month

- Half of transportation cost coverage (as per French law)

- Meal vouchers with Swile, as well as access to a fully equipped and regularly stocked kitchen

Research shows that women might feel hesitant to apply for this job if they don't match 100% of the job requirements listed. This list is a guide, and we'd love to receive your application even if you think you're only a partial match. We are looking to build teams that innovate, not just tick boxes on a job spec.

You will join of one of the most innovative startups in France at an early stage, to be part of a passionate and friendly team on its mission to build the first universal quantum computer!

We love to share and learn from one another, so you will be certain to innovate, develop new ideas, and have the space to grow.