Qulacs Documentation

Qulacs is a fast quantum circuit simulator for simulating large, noisy, or parametric quantum circuits. Implemented in C/C++ and with Python interface, Qulacs achieved both high speed circuit simulation and high usability.

Qulacs was developed in Prof. Fujii’sgroup. Maintained and developing new features by QunaSys.

GitHub

Slack Community

Study material (Japanese)

Get Started

pip install qulacs

Detailed instructions about installation in Installation. Having trouble starting? see FAQ. For basic usage of Qulacs in Python and C++, see Usage.

Tutorials

• Python Tutorial
• C++ Tutorial

User Manual

• Qulacs Python Advanced Guide
  • Quantum States
  • DensityMatrix
  • Quantum gates
  • Operation to create a new gate from multiple gates
  • Operator
  • Quantum Circuits
  • Parametric Quantum Circuits
  • Simulator

Applications

• Implementing Quantum Algorithms
  • 1.1 Quantum Circuit Learning
  • 1.2 Variational Quantum Eigensolver
  • 1.3 Subspace-Search Variational Quantum Eigensolver

Contributing

• Contributing to Qulacs