Teleportation in the Background of Schwarzschild Space-time
  Quantum teleportation is investigated between Alice who is far from the horizon and Bob locates near the event horizon of a Schwarzschild black hole. The results show that the fidelity of the teleportation is reduced in this curved space-time. However, high fidelity can still be reached outside a massive black hole. 
Xian-Hui Ge, You-Gen Shen