77 citations · 254 across the 5 of their papers we have counts for
4 papers · 1 filter
Condensing magnons in a degenerate ferromagnetic spinor Bose gas
Fang Fang, Ryan Olf, Shun Wu +2
We observe the condensation of magnon excitations within an Rb spinor Bose-Einstein condensed gas. Magnons are pumped into a longitudinally spin-polarized gas, allowed…
Thermometry and cooling of a Bose-Einstein condensate to 0.02 times the critical temperature
Ryan Olf, Fang Fang, G. Edward Marti +2
Ultracold gases promise access to many-body quantum phenomena at convenient length and time scales. However, it is unclear whether the entropy of these gases is low enough to reali…
Coherent magnon optics in a ferromagnetic spinor Bose-Einstein condensate
G. Edward Marti, Andrew MacRae, Ryan Olf +3
We measure the mass, gap, and magnetic moment of a magnon in the ferromagnetic spinor Bose-Einstein condensate of Rb. We find an unusually heavy magnon mass of $1.038(…
Collective Excitation Interferometry with a Toroidal Bose-Einstein Condensate
G. Edward Marti, Ryan Olf, Dan M. Stamper-Kurn
The precision of compact inertial sensing schemes using trapped- and guided-atom interferometers has been limited by uncontrolled phase errors caused by trapping potentials and int…