Job offer

European Commission; France; Sur place; EUR 35 000 - 55 000; Plein temps

Résumé du poste

Une institution de recherche innovante recherche un chercheur post-doctoral en physique expérimentale pour participer au développement d'une horloge atomique Yb. Le candidat sera responsable de la configuration des systèmes de capture d'atomes et de la supervision des projets au sein d'une équipe dynamique. Requiert un PhD en physique atomique et des compétences en programmation et systèmes sous vide. Ce poste est une occasion unique de contribuer à des avancées scientifiques dans un environnement collaboratif et stimulant.

Qualifications

• PhD requis en physique expérimentale.
• Intérêt fort pour le travail expérimental et compétences requises en électronique, lasers et systèmes sous vide.
• Connaissance des cavités Fabry-Perot ultrastables est un avantage.

Responsabilités

• Développer le cœur d'une horloge atomique Yb transportable.
• Superviser les étudiants en doctorat et gérer les projets de l'équipe.
• Configurer les systèmes et programmer les aspects de gestion des séquences expérimentales.

Connaissances

Systèmes sous vide ultra-haut

Lasers continus

Électronique

Programmation en Python

Espagnol

Formation

PhD en physique atomique expérimentale

Description du poste

Organisation/Company CNRS Department Laboratoire Temps Espace Research Field Physics Researcher Profile First Stage Researcher (R1) Country France Application Deadline 27 Jun 2025 - 23:59 (UTC) Type of Contract Temporary Job Status Full-time Hours Per Week 35 Offer Starting Date 1 Sep 2025 Is the job funded through the EU Research Framework Programme? Not funded by a EU programme Is the Job related to staff position within a Research Infrastructure? No

Offer Description

The candidate will participate in the development of the core of the transportable Ytterbium optical atomic clock at LTE (Laboratoire Temps-Espace), Observatoire de Paris. This clock will be connected to the REFIMEVE network (optic fibre links network disseminating an ultrastable carrier at 1542 nm), to enable remote frequency comparisons to the ~12 European stationary optical clocks. Thanks to the sensitivity of atomic clocks to local gravitational potential, these measurements will make it possible, among other things, to map the Earth's potential with unprecedented resolution.

The candidate will be responsible for configuring the existing vacuum system to optimise a combination of optical molasses (399 nm), 2D/3D magneto-optical traps (399 nm/556 nm) and optical lattice (759 nm) to trap neutral ytterbium atoms at very high rates. The trapping of atoms in this “magic” optical lattice will be developed to enable the strong confinment ('Lamb-Dicke') regime. He/she will design a time sequence to capture more than 1e4 atoms in less than 100 ms, while reaching longitudinal temperatures of the order of 1 µK. Finally, he/she will supervise the programming aspects to manage this sequence reliably and remotely.

The ytterbium team at LTE (Paris, Observatoire de Paris) is composed of 6 people, and the post-doctoral researcher we are looking for should have good supervisory experience, particularly in managing the projects of the team's PhD students. The candidate will report to the ytterbium project leader.
This new clock will benefit from the expertise accumulated during the development of the laboratory's 3 optical clocks (based on strontium and mercury). A good team spirit and a good knowledge of English are therefore absolutely essential.
The project is funded by the ANR (Agence Nationale pour la Recherche), the CNES (Centre National d'Etudes Spatiales) and the Simone and Cino Del Duca Foundation.
The position is in a sector covered by the Protection of Scientific and Technical Potential (PPST), and therefore requires, in accordance with the regulations, that your arrival be authorised by the competent authority of the MESR.

The candidate must have a PhD in experimental atomic physics. A strong interest in experimental work is required, as well as skills in ultra-high vacuum systems, continuous lasers, electronics and Python programming. Knowledge of ultrastable Fabry-Perot cavities is an advantage.