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

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Benjamin Neumann
2026-07-30 15:49:29 +02:00
parent 1e402064a6
commit bb991dd4d4
3 changed files with 12 additions and 1 deletions
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.obsidian/workspace.json
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@@ -216,6 +216,7 @@
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SS2026/Quantum Computing/Bernstein-Vazirani/Bernstein-Vazirani Algorithm.md
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@@ -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.