References

Avery

S. G. Avery, “Qubit Models of Black Hole Evaporation,” arXiv:1109.2911v2 [hep-th] (2012). Used as context for finite-dimensional evaporation models, not as a derivation of the present extractor.

HaydenPreskill

P. Hayden and J. Preskill, “Black holes as mirrors: quantum information in random subsystems,” Journal of High Energy Physics 09 (2007), 120. DOI: 10.1088/1126-6708/2007/09/120. arXiv:0708.4025. Used as recovery-task precedent under its own dynamical and access assumptions.

KnillLaflamme

E. Knill and R. Laflamme, “Theory of quantum error-correcting codes,” Physical Review A 55, 900–911 (1997). DOI: 10.1103/PhysRevA.55.900. Preprint title: “A Theory of Quantum Error-Correcting Codes,” arXiv:quant-ph/9604034. Used for the established reference-based exact-recovery framework.

KSW

D. Kretschmann, D. Schlingemann, and R. F. Werner, “The Information-Disturbance Tradeoff and the Continuity of Stinespring's Representation,” IEEE Transactions on Information Theory 54, 1708–1717 (2008). DOI: 10.1109/TIT.2008.917696. arXiv:quant-ph/0605009. Used as information–disturbance and channel-continuity background.

BenyOreshkov

C. Bény and O. Oreshkov, “General conditions for approximate quantum error correction and near-optimal recovery channels,” Physical Review Letters 104, 120501 (2010). DOI: 10.1103/PhysRevLett.104.120501. arXiv:0907.5391. Used as approximate-recovery background; its fidelity metric is not silently identified with the half-diamond metric used here.

Watrous

J. Watrous, The Theory of Quantum Information, Cambridge University Press (2018). Used for finite channels, referenced channel norms, and entropy conventions.

Wootters

W. K. Wootters, “Entanglement of formation of an arbitrary state of two qubits,” Physical Review Letters 80, 2245–2248 (1998). DOI: 10.1103/PhysRevLett.80.2245. arXiv:quant-ph/9709029. Used for the concurrence definition.

VidalWerner

G. Vidal and R. F. Werner, “Computable measure of entanglement,” Physical Review A 65, 032314 (2002). DOI: 10.1103/PhysRevA.65.032314. arXiv:quant-ph/0102117. Used for the negativity definition.