vault backup: 2026-07-30 15:49:29

2026-07-30 15:49:29 +02:00
parent 1e402064a6
commit bb991dd4d4
3 changed files with 12 additions and 1 deletions
@@ -31,3 +31,14 @@ It can be calculated as follows:

 ![[Pasted image 20260730153305.png]]

+And we can rewrite $U_f(\ket{x} \otimes \ket{-})$ as
+
+![[Pasted image 20260730154444.png]]
+
+The bottom wire has not changed.
+The top wire now has f(x) encoded in its quantum state.
+The phenomenon that the output of f is encoded as a -1 is called phase kickback.
+We need one final step before measuring.
+
+
+Now, we perform one final hadamard gate on the top wire.