Equivalence between Two-Qubit Entanglement and Secure Key Distribution
Equivalence between Two-Qubit Entanglement and Secure Key Distribution
We study the problem of secret key distillation from bipartite states in the scenario where Alice and Bob can perform measurements only at the single-copy level and classically process the obtained outcomes. Even with these limitations, secret bits can be asymptotically distilled by the honest parties from any two-qubit entangled …