Quantum mechanical scattering resonances for colliding particles occur when a continuum
scattering state couples to a discrete bound state between them. The coupling also causes …

Absorption imaging is a widely employed technique for detecting cold atom clouds and Bose-
Einstein condensates (BECs). There are situations where such images may suffer from …

One of the readily accessible observables in trapped cold-atom experiments is the column
density, which is determined from the optical depth (OD) obtained from absorption imaging …

We trap individual 1D Bose gases and obtain the associated equation of state by combining
calibrated confining potentials with in situ density profiles. Our observations agree well with …

Ultracold atomic gases have realized numerous paradigms of condensed matter physics,
where control over interactions has crucially been afforded by tunable Feshbach …

The wavefunction for indistinguishable fermions is anti-symmetric under particle exchange,
which directly leads to the Pauli exclusion principle, and hence underlies the structure of …

We demonstrate partial-transfer absorption imaging as a technique for repeatedly imaging
an ultracold atomic ensemble with minimal perturbation. We prepare an atomic cloud in a …

We report the measurement of collisions between two Bose–Einstein condensates with
strong dipolar interactions. The collision velocity is significantly larger than the internal …

Abstract Taking the ultracold 85 Rb–87 Rb collision system as an example, we investigated
the Feshbach resonances of nonzero partial waves above the threshold. The self-energy at …

This thesis describes experiments investigating the collisions of alkali metal atoms at
energies between 10− 2000 µK, measured in units of the Boltzmann constant. The atoms …