TY - JOUR
AU - William Tobias
AU - Kyle Matsuda
AU - Giacomo Valtolina
AU - Luigi De Marco
AU - Jun-Ru Li
AU - Jun Ye
AB - We observe thermalization in the production of a degenerate Fermi gas of polar 40K 87Rb molecules. By measuring the atom-dimer elastic scattering cross section near the Feshbach resonance, we show that Feshbach molecules rapidly reach thermal equilibrium with both parent atomic species. Equilibrium is essentially maintained through coherent transfer to the ground state. Sub-Poissonian density fluctuations in Feshbach and ground-state molecules are measured, giving an independent characterization of degeneracy and directly probing the molecular Fermi-Dirac distribution.
BT - Physical Review Letters
DA - 2020-01
DO - 10.1103/PhysRevLett.124.033401
IS - 3
N2 - We observe thermalization in the production of a degenerate Fermi gas of polar 40K 87Rb molecules. By measuring the atom-dimer elastic scattering cross section near the Feshbach resonance, we show that Feshbach molecules rapidly reach thermal equilibrium with both parent atomic species. Equilibrium is essentially maintained through coherent transfer to the ground state. Sub-Poissonian density fluctuations in Feshbach and ground-state molecules are measured, giving an independent characterization of degeneracy and directly probing the molecular Fermi-Dirac distribution.
PB - American Physical Society
PY - 2020
SE - 033401
EP - 033401
T2 - Physical Review Letters
TI - Thermalization and Sub-Poissonian Density Fluctuations in a Degenerate Molecular Fermi Gas
UR - https://link.aps.org/doi/10.1103/PhysRevLett.124.033401
VL - 124
ER -