Estimating entanglement in teleportation experiments

Understand

Quantum state teleportation is a protocol where a shared entangled state is used as a quantum channel to transmit quantum information between distinct locations.

• Here we consider the task of estimating entanglement in teleportation experiments.
• We show that the data accessible in a teleportation experiment allows to put a lower bound on some entanglement measures, such as entanglement negativity and robustness.
• Furthermore, we show cases in which the lower bounds are tight.