qutip

What problem does it solve?

QuTiP provides a robust toolkit for simulating quantum systems, enabling researchers to model quantum states, operators, and dynamics for both closed (unitary) and open (dissipative) systems.

Core Features & Use Cases

• Quantum Objects and States: Create ket/brad/density matrices and operators, with support for composite systems via tensor products.
• Time Evolution and Dynamics: Solve unitary Schrödinger evolution and open-system master equations, Monte Carlo trajectories, and more.
• Analysis and Visualization: Compute expectation values, entropies, fidelities,Steady states, and visualize Bloch spheres, Wigner functions, and distributions.
• Advanced Methods: Floquet theory, HEOM, stochastic solvers for complex quantum scenarios.

Quick Start

1. Install: pip install qutip
2. In Python, create a simple two-level system and evolve: from qutip import basis, sigmaz psi0 = basis(2, 0) H = sigmaz() tlist = np.linspace(0, 10, 100) result = sesolve(H, psi0, tlist, e_ops=[sigmaz()])