# How to move from (a) to (b)? [closed]

The idea I'm looking for is to go from (a) to (b) or (c). Any help?

For example:

• What are you looking to do? Are you looking to go from (a) to (b) or (c)? What do you mean by "remove a control from a quantum circuit."? The ancilla qubit $\vert 0\rangle_{\mathrm{anc}}$ controls operation of the other gates. Can you clarify your question? – Mark S 2 days ago
• Hi @Mark, I'm looking to go from (a) to (b). What I am pursuing is to get an equivalent circuit from (a), for example, to (b) without the not control the $|0 >_{anc}$. So basically, I am looking for a way to remove the control gate on any circuit. – Parfait Atchadé 2 days ago