Manuscript En04-A@1 · En04-A.tex · section · bab77211

Clifford leakage and non-Clifford nonresponse

Stabilizer structure and why the proposed implication fails › Clifford leakage and non-Clifford nonresponse · lines 864–875

The CNOT copies a basis label, not an arbitrary unknown quantum state. There is no violation of no-cloning.

The Choi state of $V_{copy}$ is

\frac{∣ 000 ⟩ + ∣ 111 ⟩}{2},

a stabilizer state. Thus its recovery obstruction does not require magic in the encoding Choi state.

Displayed formulas in this passage