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 140+ brilliant minds from over 20 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! Be part of the adventure of our ambitious startup trying to reduce tremendously the hardware needed for useful fault-tolerant quantum computing! As a Senior Quantum Experimentalist at Alice & Bob, you will be at the frontline of our cutting-edge cat-qubit processor development. In essence, your role will be to drive improvements and innovations of our processors to keep pushing the state-of-the-art with cat qubits. You will be in charge of measuring, characterizing, and optimizing our quantum circuits and gates. Furthermore, you'll play a pivotal role in improving our experimental setup and tools, driving advancements that ultimately enhance the performance of our cat-qubit processors. You will have the opportunity to work together with other top-level scientists and present the scientific research of the company externally. As a member of the Chip Design department, you will leverage your strong background in quantum mechanics to help us further optimize our cat qubits through the close interaction with device theorists. Furthermore, with your experience and expertise, you will help mentoring junior experimentalists. Responsibilities:

Measure, characterize in-depth, and fine tune quantum circuits and quantum gates.

Carry in-depth analysis of experimental data to improve our theoretical modeling.

Drive new circuit / gate designs and measurement methods from ideas to experimental validation and integration in cat-qubit quantum processors

Contribute to the improvement of the experimental setups and tools.

Contribute to the expansion of the knowledge base of Alice & Bob and the continuous training of junior experimentalists.

Report on experimental results internally and externally.

Manage external collaborations.

Requirements:

We are looking for postdoc level scientists or Phd with 2+ years of experience of experimental work in quantum mechanics, preferably in the field of superconducting quantum circuits.

Microwave control and measurement of superconducting quantum circuits

Data analysis and comparison to theory or numerical simulations (preferably with Python)

Circuit design and simulation

Quantum gate design and benchmarking

Quantum error correction protocols

Scientific Writing

Benefits: - Our success is your success : own it with our BSPCE plan - Direct IP Compensation: Earn substantial bonuses for driving the core patents that define our quantum architecture. - Flexible remote policy, up to 40 % a month - A Parental plan including additional benefits such as crèche support or additional days-off to take care of under 12 years old children - Subsidized membership with Urban Sports Club - Mental health support with moka.care - 25-day vacation policy (as per French law) + RTT - Half of transportation cost coverage (as per French law), or yearly allowance for the die-hard bicycle users - Competitive health coverage, with Alan. - Meal vouchers with Swile, as well as access to a fully equipped and regularly stocked kitchen - French language courses covered by the company for those interested 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.