We consider the problem of unitary Bose polarons, ie, impurities interacting via a potential
with infinite scattering length with a bath of weakly interacting bosons. We provide an …

Polaron, a typical quasi-particle that describes a single impurity dressed with surrounding
environment, serves as an ideal platform for bridging few-and many-body physics. In …

Lattice polarons, quasiparticles arising from the interaction between an impurity and its
surrounding bosonic environment confined to a lattice system, have emerged as a platform …

Predicting the emergent properties of impurities immersed in a quantum bath is a
fundamental challenge that can defy quasiparticle treatments. Here, we measure the …

We formulate the induced potential in a finite-temperature cold-atomic medium between two
heavy impurities, or polarons, which is shown to be complex valued in general. The …

We present a detailed study of the properties of unitary Bose polarons, ie, impurities strongly
interacting with a bath of dilute bosons via a short-range potential with infinite scattering …

This thesis describes experiments on few-and many-body bound states in a Bose-Fermi
mixture of ultracold 23Na and 40K atoms. We examine the formation of dimers and trimers in …