A solution to 2-copy distillability of Werner states
- Published
- Source
- arXiv
- Paper number
- 717
- Field
- Research
- arXiv ID
- 2607.21367
Key points
- It completely resolves the 2-copy distillability problem for Werner states in arbitrary dimensions.
- It proves that the 1-copy and 2-copy distillation thresholds are exactly the same, showing that the second copy provides no advantage.
- It uses geometric estimates on symmetric and antisymmetric tensor subspaces as the key tool.
- It resolves the first finite-copy step of the broader open problem of NPT-state distillability.
- At the boundary case α = -1/2, the proof combines block-operator inequalities with variational methods.
Paper links
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