Observation of Heteronuclear Feshbach Molecules from a 85Rb - 87Rb gas
S. B. Papp, C. E. Wieman
Abstract
We report on the observation of ultracold heteronuclear Feshbach molecules. Starting with a 87Rb BEC and a cold atomic gas of 85Rb, we utilize previously unobserved interspecies Feshbach resonances to create up to 25,000 molecules. Even though the 85Rb gas is non-degenerate we observe a large molecular conversion efficiency due to the presence of a quantum degenerate 87Rb gas; this represents a key feature of our system. We compare the molecule creation at two different Feshbach resonances with different magnetic-field widths. The two Feshbach resonances are located at 265.440.15 G and 372.41.3 G. We also directly measure the small binding energy of the molecules through resonant magnetic-field association.
Create a lesson
Related papers
Non-Hermitian Skin Effect from Radiative Coupling in a Reciprocal Chiral Medium
Kin Hung Fung, Changhao Meng, Yixin Xiao et al.
Landau Theory for Commensurate Charge-Density Waves Coupled to Uniform Lattice Deformation
Keiji Nakatsugawa, Toshiyuki Fujii, Satoshi Tanda
PCB-Integrated CoPt Micromagnets for Magnetophoresis
Melissa Mitchell, Henrique Mira, Simon Bending et al.
Raman magnon spectroscopy of local interactions and ground state selection in Sr2IrO4
Xiang Li, Scott E. Cooper, Ahmed E. Fahmy et al.
Nonreciprocal Control of the Goos--Hänchen Shift via the Barnett Effect in Cavity Magnomechanics
Shah Fahad, Gao Xianlong
Theory of the Spinon-Mediated Witness Spin Glass in Herbertsmithite
Mitikorn Wood-Thanan, Felix Flicker