Entanglement preparation and quantum communication with atoms in optical cavities
Peng Xue, Chao Han, Bo Hao Yu, Xiu‐Min Lin, Guang‐Can Guo · Physical Review A · 2004
We propose an experimentally feasible scheme to generate general entangled states between atoms in spatially separate cavities, and then show one of the applications---a secure communication allowing asymptotically key distribution and quasisecure direct communication. The scheme involves laser manipulation of atoms in a high-$Q$ cavity, adjustable quarter- and half-wave plates, beam splitter, polarizing beam splitters, and single-photon detectors, and well fits the status of the current experimental technology.