What? You Don't Use Quantum Registers?

If you're serious about writing quantum algorithms, you'd better do

Quantum computing speeds things up—not just in raw algorithmic power, but in the blur of gate sequences you write. A quantum circuit is a stream of operators—x, h, cx, u3—devoid of if‑statements or functions, and that’s part of the thrill.

Yet when you revisit your code after a single night away, those cryptic gate calls and numeric qubit indices all blend into a haze. Was qubit 2 your data register or your ancilla? Did you really mean cx(2, 3) or was that meant for a different pair? Without names, your circuit reads like an inscrutable list of magic numbers—hard to parse and even harder to maintain.