  Fathoming out quantum state space is a challenging endeavor due to its
exponentially growing dimensionality. At the expense of being bound in its
expressiveness, the discrete and finite subspace of graph states is easier to
investigate via a pictorial framework accompanied with a theoretical toolkit
from the stabilizer formalism. Analyzing hand-drawn graphs is a tedious and
time-consuming task and imposes limitations to the problem sizes that can be
addressed. Similarly, algorithmic studies using adjacency matrices alone lack
the benefit of a visual representation of the states. We argue that applying
visual analytics to investigate graph states can be advantageous. To this end,
we introduce GraphStateVis, a web-based application for the visual analysis of
qubit graph states and their stabilizer groups. Our tool facilitates the
interactive construction of a graph through multiple components supported by
linking and brushing. The user can explore graph-state-specific properties,
including the Pauli-weight distribution of its stabilizer operators and noise
thresholds for entanglement criteria. We propose a use case in the context of
near-term quantum algorithms to illustrate the capabilities of our prototype.
We provide access to GraphStateVis as an open-source project and invite the
broader quantum computing and engineering communities to take advantage of this
tool and further boost its development.
