Heralded Photon Amplification for Path Entangled Quantum Communication
F. Monteiro, E. Verbanis, Valentina Caprara Vivoli, Anthony Martin, Nicolas Gisin, Hugo Zbinden, Rob Thew · 2017
We experimentally studied heralded photon amplification for path entangled states and characterise entanglement before and after loss by exploiting displacement-based measurements. We demonstrate the recovery of high fidelity entangled states over loss-equivalent distances > 50km.