Quantum Computing

Classifying Quantum Gates

In previous sections and chapters, you’ve seen that quantum computing handles qubits, the information units of your problems, differently than classical computers. You’ve learned about a few quantum gates that manipulate a qubit’s quantum state. But, as you develop quantum algorithms to solve your own challenging problems, you’ll want even more ways of changing a qubit’s quantum state. So it’s important to build an intuitive feel for how they nudge quantum states. Specifically, you’ll learn to tie the rotation of the qubelets to a gate’s matrix. To put it another way, you’ll learn that the gate matrices are an X-ray into how gates affect quantum states.

Classification Based on How Gates Modify Qubelets
	Although there ...