List of all the group’s publications
27/05/2020
We report on measurements of the dynamics of the total magnetization and spin populations in an almost unit-filled lattice system comprising about 10^4 spin 𝑆 =3 chromium atoms, under the effect of dipolar interactions.
arXiv:2005.13487 (2020) / Phys. Rev. Lett. 125, 143401 (2020)
Albert Kaladjian, Andrea Litvinov, Bruno Laburthe-Tolra, Etienne Maréchal, Fabrice Wiotte, Isam Manai, John H. Huckans, Martin Robert-de-Saint-Vincent, Olivier Gorceix, Pierre Bataille
We introduce a spin-orbit coupling scheme, where a retroreflected laser beam selectively diffracts two spin components in opposite directions.
arXiv:2003.13444 (2020) / Phys. Rev. A 102, 013317 (2020)
Anais Molineri, Bruno Laburthe-Tolra, C. Duval, Clémence Briosne-Fréjaville, Etienne Maréchal, Fabrice Wiotte, Isam Manai, Marc Cheneau, Martin Robert-de-Saint-Vincent, Pierre Bataille, Romaric Journet
We present a spectroscopy scheme for the 7 kHz wide 689 nm intercombination line of strontium. We rely on shelving detection, where electrons are first excited to a metastable state by the spectroscopy laser before their state is probed using the broad transition at 461 nm.
arXiv:1910.11718 (2019) / J. Phys. B: At. Mol. Opt. Phys. 53 085005 (2020)
We consider a system of weakly interacting bosons confined on a planar double lattice ring subjected to two artificial gauge fields… Our analysis reveals supersolid features as well as Josephson modes, corresponding to out-of-phase modes of the finite ring.
arXiv:1910.06410 (2019) / Phys. Rev. A 101, 033618 (2020)
Ana Maria Rey, Arghavan Safavi-Naini, Bihui Zhu, Bruno Laburthe-Tolra, Laurent Vernac, Lucas Gabardos, P. Blair Blakie, Petra Fersterer, Steven Lepoutre
In this work we report on our investigation of the quantum many-body dynamics of a large ensemble of bosonic magnetic chromium atoms with spin 𝑆=3 in a three-dimensional lattice as a function of lattice depth. Using extensive theory and experimental comparisons, we study the dynamics of the population of the different Zeeman levels and the total magnetization of the gas across the superfluid to the Mott insulator transition.
arXiv:1905.06123 (2019) / Phys. Rev. A 100, 033609 (2019)
We demonstrate coherent manipulation of the nuclear degrees of freedom of ultracold ground-state strontium-87 atoms, thus We study the time evolution of a supercurrent imprinted on a one-dimensional ring of interacting bosons in the presence of a defect created by a localized barrier.
arXiv:1903.09229 (2019) / Phys. Rev. Lett. 123, 195301 (2019)
21/12/2018
We report on a scheme to cool and compress trapped clouds of highly magnetic 52Cr atoms. This scheme combines sequences of gray molasses, which freeze the velocity distribution, and free evolutions in the (close to) harmonic trap, which periodically exchange the spatial and velocity degrees of freedom.
arXiv:1812.09177 (2018) / Phys. Rev. A 99, 023607 (2019)
Bruno Laburthe-Tolra, Etienne Maréchal, Kaci Kechadi, Laurent Vernac, Lucas Gabardos, Olivier Gorceix, Paolo Pedri, Steven Lepoutre
We report on the observation of a collective spin mode in a spinor Bose-Einstein condensate.
arXiv:1804.10254 (2018) / Phys. Rev. Lett. 121, 013201 (2018)
We consider a spin chain of fermionic atoms in an optical lattice, interacting with each other by super-exchange interactions. We theoretically investigate the dissipative evolution of the spin chain when it is coupled by magnetic dipole–dipole interaction to a bath consisting of atoms with a strong magnetic moment.
arXiv:1803.10663 (2018) / New J. Phys. 20 073037 (2018)
Ana Maria Rey, Bihui Zhu, Bruno Laburthe-Tolra, Bruno Naylor, Etienne Maréchal, Johannes Schachenmayer, Laurent Vernac, Lucas Gabardos, Olivier Gorceix, Steven Lepoutre
We study the spin dynamics and approach towards local thermal equilibrium of a macroscopic ensemble of S = 3 chromium atoms pinned in a three dimensional optical lattice and prepared in a pure coherent spin state, under the effect of magnetic dipole–dipole interactions.
arXiv:1803.02628 (2018) / Nat. Commun. 10, 1714 (2019)