Tutorial: Paris center for quantum computing, Paris
Some aspects of quantum simulation using cold atoms
Collective spin modes of a trapped quantum ferrofluid
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)
Dissipative cooling of spin chains by a bath of dipolar particles
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)
Exploring out-of-equilibrium quantum magnetism and thermalization in a spin-3 many-body dipolar lattice system
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)
Note on the reflectance of mirrors exposed to a strontium beam
While a number of experiments use heated sapphire windows to reduce strontium deposition and increase the viewport lifetime, here we study another possibility, consisting of sending the laser beam into the atomic flux by reflecting it off a mirror at 45 degree exposed to the strontium flux. We present our attempt to find a substrate that can be exposed to strontium and maintain high reflectivity.
arXiv:1802.08499 (2018)
Retardation effects in spectroscopic measurements of the Casimir-Polder interaction
We focus on selective reflection, one of the main spectroscopic probes of Casimir-Polder interactions. We calculate selective reflection spectra using the full, distance dependent, Casimir-Polder energy shift and linewidth.
arXiv:1801.06119 (2018) / Phys. Rev. A 97, 023806 (2018)
Tutorial: ENS, Paris
Dipolar quantum gases
First blue magneto-optical trap.
Our first blue magneto-optical trap.
Spin mixing and protection of ferromagnetism in a spinor dipolar condensate
We study spin mixing dynamics in a chromium dipolar Bose-Einstein condensate, after tilting the atomic spins by an angle 𝜃 with respect to the magnetic field.
arXiv:1705.08358 (2017) / Phys. Rev. A 97, 023610 (2018)
End of bakeout
The bake-out is completed, the blue laser system is in place. Oven loading and laser cooling come next.