ENTANGLEMENT SWAPPING AND QUANTUM COMMUNICATION IN CAVITY QED
Chuan-Jia Shan, Ji-Bing Liu, W. W. Cheng, Tang-Kun Liu, Yanxia Huang, HONG LI · International Journal of Quantum Information · 2008
We study entanglement swapping and quantum communication in the context of cavity QED. We first present an entanglement swapping scheme in cavities where two atoms without interacting previously can be entangled with the success probability unity. Then, conditioned on a novel property of entanglement swapping, we propose a secure direct communication protocol, in which two legitimate users can communicate deterministically.