Protocols for fast and resource efficient quantum repeaters

The internet has had a revolutionary impact on our world. The vision of quantum internet – capable of transmitting quantum information – will provide novel applications that are provabl impossible by communicating only classical information. An outstanding challenge of buildin large scale quantum networks is to establish a quantum channel that can connect remot parties efficiently. Direct quantum communication with optical fiber network over continental scale suffers from fiber attenuation and exponential reduction of communication rate. To overcome this challenge, quantum repeaters and quantum satellites have been proposed and demonstrated to boost communication rates over long distances. In this talk, I will introduce these technologies with the promise of enabling global quantum networks. In addition, I will discuss related research frontiers and promising applications of quantum internet.