Radio-Frequency Adiabatic Potentials for Guided Atom-Clock Interferometry
March 12th, 2019 HÈCTOR MAS IESL-University of Crete

Matter-wave interferometers based on the coherent manipulation of trapped ultra-cold clouds of the clock states of Rubidium 87 (F=1, m=-1 and F=2, m=1) have been recently proposed to measure the Sagnac phase. Two main challenges stand out. First, one needs coherent spin state-dependent manipulation: in the same experimental sequence both spin states must travel in opposite directions surrounding a loop matter-waveguide. Second, the dephasing time of the superposition state after the first beam-splitter must be longer than the travel time of the atomic clouds. We present experimental and theoretical advances regarding both challenges. We have demonstrated coherent transport of BECs, and spin-state dependent manipulation. We have also investigated the clock transition in RF-dressed traps, altogether demonstrating a novel adiabatic potential that narrows the transition linewidth between the clock states by one order of magnitude.

Seminar, March 12, 2019, 15:00. ICFO’s Seminar Room

Hosted by Leticia Tarruell