Quantum Computing

Bottom Line

Generating all possible quantum states or rotating qubelets is well and good, but eliminating qubelet combinations from the mega-qubit ups the ante on figuring the correct quantum effects to apply. Even though applications in quantum cryptography deal with several qubits, the BB84 protocol is designed around quantum effects applied to single qubits. The quantum effects in search applications, though, are necessarily intertwined across multiple qubits simultaneously. You need to tease out symmetries with combinations of gates that may appear overly complicated but will become clear when you look at gate matrices.

Our analysis of Grover’s algorithm continues a theme you saw in ​Design a Teleporting Circuit​, where we used circuits ...