  The use of classical computers to simulate quantum computing has been
successful in aiding the study of quantum algorithms and circuits that are too
complex to examine analytically. Current implementations of quantum computing
simulators are limited to two-level quantum systems. Recent advances in
high-dimensional quantum computing systems have demonstrated the viability of
working with multi-level superposition and entanglement. These advances allow
an agile increase in the number of dimensions of the system while maintaining
quantum entanglement, achieving higher encoding of information and making
quantum algorithms less vulnerable to decoherence and computational errors. In
this paper, we introduce QuantumSkynet, a novel high-dimensional cloud-based
quantum computing simulator. This platform allows simulations of qudit-based
quantum algorithms. We also propose a unified generalization of
high-dimensional quantum gates, which are available for simulations in
QuantumSkynet. Finally, we report simulations and their results for qudit-based
versions of the Deutsch--Jozsa and quantum phase estimation algorithms using
QuantumSkynet.
