Quantum engineers have now demonstrated a fully controllable three‑qubit register on a silicon photonic chip, turning a ...

(a) An arbitrary single-qubit gate as a rotation in the Bloch picture. (b) List of a few common single-qubit gate operations.

Evolution paths of the single control qubit on the Bloch sphere in the hybrid approach to Grover’s algorithm. Quantum computers are built of elementary operations called quantum gates that are similar ...