Quantum Computing Questions
The controlled-controlled-Toffoli gate, also known as the CCX gate or the Toffoli gate, is a three-qubit gate in quantum computing. It is a universal gate, meaning that any quantum computation can be constructed using a combination of Toffoli gates and single-qubit gates. The CCX gate performs a controlled-NOT (CNOT) operation on the target qubit if and only if both control qubits are in the state |1⟩. If either or both of the control qubits are in the state |0⟩, the target qubit remains unchanged.