Kamel Almaamri

Flagged Unitary–Replacer Channels: Sector-Resolved Choi-Moment Spectral Completion, Fixed-Fidelity Choi-Entropy Fibers, and Joint Transparency–Spectrum Identifiability

Within flagged unitary–replacer channels, optimized recovered entanglement fidelity is spectrally incomplete: it fixes weighted transparency but not the hidden replacer spectrum or conditional Choi entropy. For a resolved positive-probability sector with known transparency 0 ≤ a...

Flagged Unitary–Replacer Channels: Sector-Resolved Choi-Moment Spectral Completion, Fixed-Fidelity Choi-Entropy Fibers, and Joint Transparency–Spectrum Identifiability

Within flagged unitary–replacer channels, optimized recovered entanglement fidelity is spectrally incomplete: it fixes weighted transparency but not the hidden replacer spectrum or conditional Choi entropy. For a resolved positive-probability sector with known transparency 0 ≤ a...