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NEW! A post-doc position is available in the frame ANR VORTECS, to work on the Rubidium project.

Vortex turbulence on a curved surface

The BEC group at LPL is an expert in superfluid dynamics in low dimensions. We operate an original BEC machine enabling the production of two-dimensional atomic rubidium superfluids trapped onto a curved shell-shaped surface using adiabatic potentials, resulting in a very smooth and highly tunable environment [1]. This enables the study of fast rotating superfluids in a new supersonic regime [2], and the study of vortex lattices [3]. Recently we implemented a protocol to compensate the gravitational potential allowing the superfluid to expand onto the curved surface [4]. We are now in a position to combine these two tools to study for the first time the physics of a superfluid rotating on a curved surface and address the analogy with atmospheric fluid dynamics.

[1] Merloti et al., New Journal of Physics 15, 033007 (2013)
[2] Guo et al., Phys. Rev. Lett. 124, 025301 (2020)
[3] Sharma et al., Phys. Rev. Lett. 133, 143401 (2024)
[4] Guo et al., New Journal of Physics 24, 093040 (2022)

We offer a 2-year post-doctoral position (ANR funded), to start end 2024 or 2025, to investigate this new topic and drive the current experimental developments:

  • We are currently developing new imaging systems to improve our current optical resolution. The post-doc will supervise the installation of a new laser system to demonstrate in situ vortex imaging, a key asset for the study of vortex turbulence.
  • We are interested in strongly out-of-equilibrium dynamics of a two-dimensional superfluid on a curved surface: the post-doc will contribute to the study of the emergence of turbulent behavior in a rotating frame.

Environment: The LPL, located on the campus of University Sorbonne Paris Nord at less than 30 minutes from the center of Paris, gathers about 80 people on five research axes spanning metrology to bio-physics. About 20 people are currently members of the quantum gases axis, working on one of the five experiments. The post-doc will join the Rubidium team, currently comprising one researcher, two associate professors and two PhD students (1st year and 3rd year). We also benefit from the help of a research engineer. The experiment is currently funded by the ongoing ANR project VORTECS (2023-2026), in close collaboration with the theory group of Sergey Nazarenko (Nice), as well as other ANR or PEPR funding.

Profile: We are looking for a highly motivated candidate with an expertise in cold atoms, atomic physics or quantum optics. A previous experience on an ultra-cold atom experiment will be particularly appreciated.

Position details: We offer a 24 months fixed term contract starting ideally in January 2025, with a salary from 2930 to 3370 euros gross monthly depending on experience. Extension is possible.

For more information, contact us by email: Hélène Perrin.

To apply follow this link. The position will remain open until filled.

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