Qulacs

Qulacs is a high-performance Python/C++ library designed for simulating large, noisy, or parametric quantum circuits. It features a parallelized C/C++ backend for speed and offers GPU support to accelerate simulations further. Key capabilities include simulating noisy quantum gates relevant for NISQ devices and supporting parametric quantum gates essential for variational algorithms. The library also incorporates circuit compression techniques and provides numerous utility functions for quantum computation research. Performance benchmarks indicate competitive simulation speeds compared to other libraries.