Drag-and-drop quantum circuit composer and simulator. Step through states, see Bloch spheres, and export to Qiskit, Cirq, OpenQASM, PennyLane and Braket.
Drag-and-drop circuit editor with 19 gate types, including rotations, phase gates, SWAP, measurement and reset
Controls on any gate, with CNOT, CZ, controlled-phase, Toffoli and Fredkin presets
State-vector simulator for up to 16 qubits, running entirely in the browser
Step-by-step timeline to watch the state change gate by gate
Exact probabilities, sampled measurement counts, the full state vector and a Bloch sphere for every qubit
Code export to Qiskit, Cirq, OpenQASM 2.0, OpenQASM 3.0, PennyLane and Amazon Braket
OpenQASM 2.0 and 3.0 import
Templates for the Bell state, GHZ state, teleportation, superdense coding, Deutsch–Jozsa, Bernstein–Vazirani, Grover's search and the quantum Fourier transform
Share links that encode the whole circuit in the URL, plus autosave and undo