Fast Quantum Simulation and Vivid Visualizations R package qvivid version 0.1.3 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). Software Depends: R (>= 4.2.0) Imports: grDevices, graphics Suggests: gifski, ggplot2 (>= 3.4.0), knitr, rmarkdown, testthat (>= 3.0.0) Sanmi (Oluwasanmi) Adenaiye <dradenaiyesanmi@gmail.com> Comprehensive R Archive Network (CRAN) Sanmi (Oluwasanmi) Adenaiye [aut, cre, cph] MIT + file LICENSE (https://CRAN.R-project.org/package=qvivid/LICENSE) 2026-08-23 application/tgz https://CRAN.R-project.org/package=qvivid doi:10.32614/CRAN.package.qvivid