Under local amplitude damping, GHZ-type states lose magic, regain it after entanglement death, and the rebirth threshold exactly mirrors the entanglement-death threshold: γ₊ = 1 − γₑ for every n.
Approximate quantum error correction can lead to better codes
2 Pith papers cite this work, alongside 222 external citations. Polarity classification is still indexing.
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A quantum anonymous secret sharing scheme is constructed using permutation-invariant codes, with leakage in ramp schemes quantified by quantum conditional min-entropy related to Knill-Laflamme conditions.
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Sudden death of entanglement, rebirth of magic
Under local amplitude damping, GHZ-type states lose magic, regain it after entanglement death, and the rebirth threshold exactly mirrors the entanglement-death threshold: γ₊ = 1 − γₑ for every n.
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Quantum Anonymous Secret Sharing with Permutation Invariant Codes
A quantum anonymous secret sharing scheme is constructed using permutation-invariant codes, with leakage in ramp schemes quantified by quantum conditional min-entropy related to Knill-Laflamme conditions.