Duration : 24 months
LNE
A leader in the field of measurement and standards, with a strong reputation in France and internationally, the LNE supports industrial innovation and is positioned as a key player in promoting a more competitive economy and a safer society. At the crossroads of science and industry since its creation in 1901, the LNE offers its expertise to all economic players involved in product quality and safety. As the leader in French metrology, our research is at the heart of our public service mission and is a fundamental factor in supporting the competitiveness of businesses. We are committed to meeting the requirements of industry and academia for ever more accurate measurements, carried out in increasingly extreme conditions or on innovative subjects such as autonomous vehicles, nanotechnologies, and additive manufacturing.
Missions
As part of the National Quantum Strategy, the LNE coordinates the MetriQs-France program, dedicated to the development, operation, and promotion of measurement standards for the reliable characterization and evaluation of quantum technologies. Among the enabling technologies for qubits, traveling wave parametric amplifiers (TWPA), based on the Josephson effect, are key components for the optimal reading of superconducting qubits, which require high-fidelity electrical measurements via amplification with noise close to the quantum limit over a wide bandwidth. The reliable and harmonized evaluation and quantification of the performance of these Josephson parametric amplifiers is crucial to improving the maturity of this technology and, ultimately, to progressing toward the overall evaluation of the performance of superconducting quantum computers, a major objective of the MetriQs program. Within the LNE’s fundamental electrical metrology department, your mission will be to coordinate the LNE’s work on the metrological characterization of TWPA in various projects, both at the national level (MetriQs-Dev-France MOCQUA) and European level (Horizon Europe JRP MetSuperQ and Qu-Test projects). You will contribute fully to the experimental work planned as part of these various projects and to their promotion.
In this context, your main tasks will therefore consist of:
- Participating in standardization efforts concerning TWPA (intercomparisons, best practice guides, etc.).
- Developing high-frequency measurement techniques (calibrated S parameters, noise, etc.) at cryogenic temperatures and applying them to the characterization of TWPA, both as isolated components and as components integrated into a superconducting qubit readout chain;
- Analyzing the data obtained and comparing it with theoretical and simulated models;
- Promoting the results through scientific communications (articles and conferences);
Profil
You hold a PhD in solid-state quantum physics.
You are able to analyze results and synthesize information.
You are pragmatic, rigorous, and possess a critical mind. You are able to work both independently and as part of a team. You are open to participating in several projects at different levels (at LNE, nationally, and in Europe).
You have experience in cryogenic measurements of superconducting circuits, including microwave measurements and associated engineering, and ideally previous experience in characterizing Josephson parametric amplifiers.
You have a strong interest in experimental science, measurement, instrumentation, and technological and applied research.
Fluency in scientific English is required.
Rejoindre le LNE
- Join an international group of nearly 1,000 employees.
- Participate in the development of an EPIC that has been serving society and citizens since 1901.
- Join an organization that supports local authorities and manufacturers in meeting the societal and environmental challenges of tomorrow.
- Join a research organization involved in European and international projects.
- Join a company that places respect and fairness at the heart of its HR policies.
- Join a company that is committed to CSR and has implemented a sustainable mobility package agreement.
- Join a company that offers personalized integration and regular training courses.
- Enjoy a fixed salary over 12 months as well as an annual end-of-year bonus.
- Enjoy executive status with numerous benefits.
- Enjoy a profit-sharing bonus and an employee savings plan (PEE/PERCO) with employer contributions.
- Enjoy health insurance* and life insurance*.
- Have access to the company restaurant directly on our Trappes site.
- Have access to a wide range of offers through our CSE
*under the conditions set out in the agreements and their amendments.
