pyqrack

PyQrack provides pure Python bindings for the high-performance Qrack quantum computer simulator, which is written in C++11 and OpenCL. This allows Python users to leverage a fast, state-vector based simulator.

Key features include:

• OpenCL acceleration: Utilizes GPUs or other accelerators for improved performance. Note that OpenCL installation is required for accelerator support, except on Mac ARM where it's deprecated.
• Zero-copy mode: Engage this mode via PYQRACK_HOST_POINTER_DEFAULT_ON=1 for potential performance gains, especially with integrated graphics.
• Flexible gate representation: Define arbitrary single-qubit gates using 2x2 complex matrices.
• Controlled gates: Supports multiply-controlled gates (MC, MAC).
• PyZX integration: Load and simulate circuits defined or optimized using the PyZX library.

Installation is typically done via PyPi wheels, which include pre-compiled Qrack binaries. Building from source requires building Qrack first. Environment variables can configure library paths or floating-point precision.