Manuscript En07-B@1 · En07-B.tex · remark · 45dff4a1

Remark: The dilation is not the classical interface

Enter, forgetting, and surviving quantum registers · lines 657–663

With both $K$ and $E$ accessible, $W_{B}$ has a CPTP left inverse by Theorem thm:global. With only the classical $K$ returned, that conclusion no longer follows. Coherent copying of computational labels is not a record-only quantum decoder.

Nearby in this section

definition: Definition: Destructive computational-basis Enter
section: Enter, forgetting, and surviving quantum registers
lemma: Lemma: Readout-and-drop equals partial trace
proposition: Proposition: Operational discard does not entail annihilation