Entanglement teleportation via Bell mixtures
Sibasish Ghosh, Guruprasad Kar, Anirban Roy, Debasis Sarkar, Ujjwal Sen · Physical Review A · 2002
We investigate teleportation of bipartite pure entanglement through two equally noisy quantum channel states, namely, a mixture of Bell states. There is a particular mixed-state channel for which all pure entangled states in a known biorthogonal product basis remain entangled after this inexact teleportation, which occurs for the duration of the entanglement. The Werner state channel lacks both these features. The relation of these noisy channels to the violation of Bell's inequality and quantum two-entropy inequality is studied.