Quantum Computing Questions
The Fredkin gate, also known as the Controlled-SWAP 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⟩, then the second and third qubits remain unchanged. The Fredkin gate is a fundamental gate in quantum computing and is used in various quantum algorithms and circuit designs.