  Many of the most exciting materials discoveries in fundamental condensed
matter physics are made in systems hosting some degree of intrinsic disorder.
While disorder has historically been regarded as something to be avoided in
materials design, it is often of central importance to correlated and quantum
materials. This is largely driven by the conceptual and theoretical ease to
handle, predict, and understand highly uniform systems that exhibit complex
interactions, symmetries and band structures. In this perspective, we highlight
how flipping this paradigm has enabled exciting possibilities in the emerging
field of high entropy oxide (HEO) quantum materials. These materials host high
levels of cation or anion compositional disorder while maintaining unexpectedly
uniform single crystal lattices. The diversity of atomic scale interactions of
spin, charge, orbital, and lattice degrees of freedom are found to emerge into
coherent properties on much larger length scales. Thus, altering the variance
and magnitudes of the atomic scale properties through elemental selection can
open new routes to tune global correlated phases such as magnetism,
metal-insulator transitions, ferroelectricity, and even emergent topological
responses. The strategy of embracing disorder in this way provides a much
broader pallet from which functional states can be designed for next-generation
microelectronic and quantum information systems.
