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Counterflow and paired superfluidity in one-dimensional Bose mixtures in optical lattices
Anzi Hu, L. Mathey, Ippei Danshita +3
We study the quantum phases of mixtures of ultra-cold bosonic atoms held in an optical lattice that confines motion or hopping to one spatial dimension. The phases are found by usi…
Number Fluctuations and Energy Dissipation in Sodium Spinor Condensates
Yingmei Liu, Eduardo Gomez, Stephen E. Maxwell +3
We characterize fluctuations in atom number and spin populations in F=1 sodium spinor condensates. We find that the fluctuations enable a quantitative measure of energy dissipation…
Radio-frequency dressing of multiple Feshbach resonances
A. M. Kaufman, R. P. Anderson, Thomas M. Hanna +3
We demonstrate and theoretically analyze the dressing of several proximate Feshbach resonances in Rb-87 using radio-frequency (rf) radiation. We present accurate measurements and c…
Collisional cooling of ultra-cold atom ensembles using Feshbach resonances
L. Mathey, Eite Tiesinga, Paul S. Julienne +1
We propose a new type of cooling mechanism for ultra-cold fermionic atom ensembles, which capitalizes on the energy dependence of inelastic collisions in the presence of a Feshbach…
Quantum Phase Transitions and Continuous Observation of Spinor Dynamics in an Antiferromagnetic Condensate
Yingmei Liu, Sebastian Jung, Stephen E. Maxwell +3
Condensates of spin-1 sodium display rich spin dynamics due to the antiferromagnetic nature of the interactions in this system. We use Faraday rotation spectroscopy to make a conti…
Multi-channel modelling of the formation of vibrationally cold polar KRb molecules
Svetlana Kotochigova, Eite Tiesinga, Paul S. Julienne
We describe the theoretical advances that influenced the experimental creation of vibrationally and translationally cold polar KRb molecules \cite{nphys08,science08}.…