qvivid - Fast Quantum Simulation and Vivid Visualizations

Builds, simulates, inspects, and animates gate-based quantum circuits. The package provides a readable reference implementation and compiled state-vector kernels, reproducible shot sampling, circuit diagrams, phase-aware state plots, reduced-state Bloch spheres, journal-sized figure export, and animated trajectories. For background on the implemented methods, see Nielsen and Chuang (2010, ISBN:9781107002173).