Intern - FTQC Simulations for Cat-Qubit Architectures (September 2025)

Alice & Bob is a rapidly growing deeptech company going through the R&D stage to shape the future of Quantum computing. A diverse team of brilliant minds from over 20 countries, we're on a mission to revolutionize technology and benefit humanity by building the first universal, fault-tolerant quantum computer with a new kind of superconducting qubit: the Schrödinger cat qubit. While we're dedicated to our work, we also value a fun and collaborative culture. Are you ready to join us on this groundbreaking journey? Join us today!
The Quantum Error Correction (QEC) team at Alice & Bob has the exciting task to continuously improve the fault-tolerant architecture, finding new ways to ever reduce the requirement and cost of fault-tolerance as well as helping in implementing the best solutions into the Alice & Bob quantum computer. You will be joining a passionate and focused team within an amazing organization dedicated to build a universal and fault-tolerant quantum computer without taking any detours.
About the role:One of the crucial tasks of the QEC team is the simulation and performance evaluation of all the proposed architectures and fault-tolerant protocols. This allows to efficiently guide the development of the quantum computer and exploration of new architectures.

Responsibilities:

• Develop and consolidate the simulation tools of fault-tolerant quantum primitives based on Alice & Bob cat qubits.
• Expand the library of error correcting codes and fault-tolerant primitives.
• Streamline the evaluation of desirable parameter regimes and the optimization of future realizations.

Requirements:

• Master level course on quantum computing
• Experience with stim/sinter/pymatching

We're also looking for:

• Experience in quantum error correction
• Experience with bosonic codes such as cat-qubits

Benefits:

• 1 day off per month
• Meal Vouchers with Swile
• 50% Navigo reimbursement

Recruitment Process:

• Hiring Manager Interview with Christophe (45 min)
• Technical Interview/Presentation with the Team (60 min)
• Fit Interview (45 min)
• Reference Check

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.