Skip to main content
Quantum Computing

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

2
  • $\begingroup$ Is there a way to represent it in circuits or operator matrices or some other more concrete form? I am a little confused as to how you make it access a specific input. $\endgroup$ Commented Mar 28, 2018 at 21:27
  • $\begingroup$ As the input is classical information (bits rather than qubits, just encoded as qubits), one can simply "copy" them with CNOTs. That's not a true copy but an entangled one, but that is good enough for this. It is important to uncompute the copy (again with CNOTs) or else Grover's algorithm won't work. $\endgroup$ Commented Mar 28, 2018 at 21:30