If qubits are the data of quantum computing, gates are the instructions. A quantum program is a sequence of gates applied to qubits, followed by measurement, and it is usually drawn as a circuit diagram. This module shows how to read and think about those diagrams.
It starts with a practical tour of a quantum instruction set: the Hadamard gate for creating superposition, the CNOT gate for linking two qubits, and measurement for reading out a result. From there it moves to the quantum circuit model in more formal terms, building on the vectors and matrices from earlier modules. It closes with a short hands-on Qiskit example that builds a two-qubit circuit and runs it.
Watch the lessons in order, then continue on to Entanglement & Quantum States.
Robert Smith of Rigetti Computing explains quantum programs as a list of instructions, covering the Hadamard gate, the CNOT gate, and measurement.
Qiskit's lesson on the quantum circuit model, including how gates act on states and the math of inner products, projections, and measurement.