CNOT Gate

A controlled-NOT (CNOT) gate is a fundamental two-qubit gate consisting of a control qubit and a target qubit. It performs a bit-flip (Pauli-X) operation on the target qubit if and only if the control qubit is in the |1⟩ state. The CNOT gate is an essential component of quantum algorithms, as it provides a primary mechanism to establish quantum entanglement between qubits.