Optional Enter interpretation

Under this assumption, finite allocation, rotations, pointer couplings, destructive Born readout, and classical postprocessing have the displayed Enter interpretation. Mixed finite inputs are treated by finite purification. Values of residual rays on zero-probability branches are not required.

Without this assumption, all channel theorems remain ordinary quantum-channel statements with specified Born instruments. Landmark I neither selects the Unruh state nor constructs the effective port or its local field counterpart.

Figure fig:resources separates parameters that can be driven down inside the declared family from resources that grow with that demand, and from error floors that extra trials do not remove. No thermodynamic optimum is claimed.