  Quantum droplets are a quantum analogue to classical fluid droplets in that
they are self-bound and display liquid-like properties -- such as
incompressibility and surface tension -- though their stability is the result
of quantum fluctuations. One of the major systems for observing quantum
droplets is two-component Bose gases. Two-component droplets are typically
considered to be balanced, having a fixed ratio between the densities of the
two component. This work goes beyond the fixed density ratio by investigating
spherical droplets in imbalanced mixtures. With increasing imbalance, the
droplet is able to lower its energy up to a limit, at which point the droplet
becomes saturated with the atoms of the majority component and any further
atoms added to this component cannot bind to the droplet. Analysing the
breathing mode dynamics of imbalanced droplets indicates that the droplet can
emit particles, as in balanced mixtures, but the imbalance leads to an
intricate superposition of multiple simultaneously decaying collective
oscillations.
