Quantum secure direct communication, quantum repeater and communication system, quantum network and devices, quantum communication theory.
(1) Develop key technologies, devices and systems for quantum secure direct communication.
(2) Develop on-chip entangled light source, multi-photon and multi-dimensional Bell-state
measurement and other technologies, realize quantum repeater network and long-distance quantum secure communication.
(3) Conduct studies and develop the key technologies and devices for quantum network, construct secure-repeater based intra-city, inter-city, satellite-ground and global quantum networks.
(4) Conduct research on quantum communication and quantum cryptography theories.