  The state vector-based simulation offers a convenient approach to developing
and validating quantum algorithms with noise-free results. However, limited by
the absence of cache-aware implementations and unpolished circuit
optimizations, the past simulators were severely constrained in performance,
leading to stagnation in quantum computing. In this paper, we present an
innovative quantum circuit simulation toolkit comprising gate optimization and
simulation modules to address these performance challenges. For the
performance, scalability, and comprehensive evaluation, we conduct a series of
particular circuit benchmarks and strong scaling tests on a DGX-A100
workstation and achieve averaging 9 times speedup compared to state-of-the-art
simulators, including QuEST, IBM-Aer, and NVIDIA-cuQuantum. Moreover, the
critical performance metric FLOPS increases by up to a factor of 8-fold, and
arithmetic intensity experiences a remarkable 96x enhancement. We believe the
proposed toolkit paves the way for faster quantum circuit simulations, thereby
facilitating the development of novel quantum algorithms.
