The photonic integrated circuits provide a potential approach for scalable photonic quantum information processing.
By intefacing trapped single atoms with photonic devices, interesting photon-atom interaction and quantum gates can be realized.
We theoretically and experimentally investigate cavity quantum electrodynamics and explore its applications in quantum information, including: (i) Atom-photon interactions with superconducting circuits, neutral atoms, rare earth ions in crystal and NV centers in diamond. (ii) The hybrid quantum systems, including optomechanics, optical-microwave interface and magnonics. (iii) Quantum networks and secure quantum communication over long distances. (iv) Quantum error correction to protect quantum information from decoherence.