Quantum Computing Questions
The controlled-controlled-swap gate, also known as the Toffoli gate, is a three-qubit gate in quantum computing. It performs a controlled swap operation, meaning it swaps the states of the second and third qubits if and only if the first qubit is in the state |1⟩. If the first qubit is in the state |0⟩, the second and third qubits remain unchanged. This gate is commonly used in quantum algorithms and circuits for various computational tasks.