Quantum Computing Questions
The controlled-Toffoli gate, also known as the controlled-controlled-not (CCNOT) gate, is a three-qubit gate in quantum computing. It performs a controlled-not operation on the target qubit if and only if both control qubits are in the state |1⟩. In other words, it flips the state of the target qubit if and only if both control qubits are in the state |1⟩, otherwise it leaves the target qubit unchanged.