Quantum Computing Questions
The controlled-controlled-controlled-X gate, also known as the Toffoli gate, is a three-qubit gate in quantum computing. It performs the controlled-X operation on the third qubit if and only if the first two qubits are both in the state |1⟩. Otherwise, it leaves the third qubit unchanged. This gate is commonly used in quantum algorithms for various computational tasks, including reversible computing and error correction.