Laboratoire de Physique des Lasers
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The superradiant laser lab at LPL has extensive experience with studies of many-body phenomena arising in quantum gasses of ultracold atoms. They are developing a continuous superradiant laser based on a beam of cold strontium atoms. This future active optical clock will have access to the REFIMEVE network thanks to the presence of the network’s co-founder team at LPL.
We have an open PhD position. |
Team members
Bruno Laburthe-Tolra is a French physicist and CNRS researcher at the Laboratoire de Physique des Lasers (LPL), Sorbonne Paris Nord University. After completing his PhD in 2001 and a postdoctoral stay in the United States, he joined CNRS in 2003. His research focuses on ultracold atomic gases, especially systems where long-range dipolar interactions and high-spin physics play a central role. He contributed pioneering work on chromium Bose–Einstein condensates, enabling the exploration of strongly dipolar quantum gases. His recent projects investigate high-spin fermionic and bosonic gases, optical-lattice physics, CW superradiant laser, and the quantum dynamics of many-body systems relevant to quantum metrology and entanglement studies. In 2011, he was awarded the CNRS Bronze Medal for his significant contributions to atomic and quantum physics.
Martin Robert-de-Saint-Vincent is a French physicist working at the Laboratoire de Physique des Lasers (LPL), part of Université Sorbonne Paris Nord / CNRS. He leads the “Magnetic Quantum Gases (GQM)” research team within the broader “Quantum Gases” axis of the lab, focusing on ultra-cold atoms and quantum many-body physics. He started his career with a PhD performing experiments on the transport properties of atomic matter waves in disordered potentials. Over his post-doctoral years, he then worked on multiple ultracold-atom setups to study many-body quantum physics, with a dominance of the quantum simulation and quantum optics fields: strongly-interacting Rydberg polaritons, low-dimensional Bose gases. Since 2015, he has developed at LPL two experimental setups exploring the potential of ultracold atomic strontium for many-body physics and metrology (spin>1/2 fermionic matter, cavity-QED for active clocks). In addition to his research, Martin Robert-de-Saint-Vincent is also involved in teaching: he co-teaches an “Ultra Cold Atoms” course at ENS PSL (Master's level).
Benjamin Pasquiou is a French research engineer at the Laboratoire de Physique des Lasers (LPL), part of CNRS / Université Sorbonne Paris Nord in Villetaneuse. He completed his PhD in 2011, with a thesis on dipole-dipole interactions and their effects on the magnetic properties of a chromium Bose–Einstein condensate. His research focuses on ultracold atomic gases, especially dipolar quantum gases, where long-range dipole interactions lead to novel quantum behavior. To this end, he used the highly magnetic chromium atoms and also investigated ways of associating polar RbSr molecules. His recent research focuses on using strontium atoms for advanced quantum experiments. He worked on laser-cooling techniques to create a continuous-wave atom laser and is now part of the “Strontium lab” in LPL’s Magnetic Quantum Gases group. The team produces ultra-cold, degenerate Fermi gases of 87Sr, enabling studies in exotic many-body physics and quantum magnetism. He is also developing a continuous superradiant laser with cold strontium atoms in an optical cavity to achieve ultra-stable light for next-generation optical clocks.
