Preparation and applications of the disentanglement-free state
Kehui Song, Yun-Kun Jiang, Bao‐Sen Shi, Guang‐Can Guo · Journal of Optics B Quantum and Semiclassical Optics · 2000
In this paper, the disentanglement-free state is prepared by using the cavity QED technique. Through this disentanglement-free state we have obtained a long-distance Einstein-Podolsky-Rosen (EPR) pair. By using n EPR pairs of distance-atom and n distance-cavity, the entanglement of the n distance-cavity has been obtained. This entanglement can then be used in quantum communications.