Preparation of genuine Yeo-Chua entangled state and teleportation of two-atom state via cavity QED  

作　　者：ZHANG Wen LIU YiMin ZUO XueQin ZHANG ZhanJun 

机构地区：[1]School of Physics&Material Science,Anhui University,Hefei 230039,China [2]Department of Physics,Shaoguan University,Shaoguan 512005,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2010年第12期2232-2237,共6页中国科学:物理学、力学、天文学(英文版)

基　　金：supported by the program for New Century Excellent Talents at the University of China (Grant No. NCET-06-0554);the National Natural Science Foundation of China (Grant Nos. 10975001,60677001, 10747146 and 10874122);the Science and Technology Fund of Anhui Province for Outstanding Youth (Grant No. 06042087);the Talent Foundation of Higher Education of Anhui Province for Outstanding Youth(Grant No. 2009SQRZ018);the Science Research Foundation of Anhui University for Youth (Grant No. 2009QN017B);the Natural Science Foundation of Guangdong Province (Grant Nos. 06300345 and 7007806)

摘　　要：We first propose a scheme for preparing the genuine Yeo-Chua 4-qubit entangled state via cavity QED. Using the genuine Yeo-Chua atomic state, we further propose a cavity QED scheme for teleporting an arbitrary two-atom state. In two schemes the large-detuning is chosen and the necessary time is designed to be much shorter than Rydberg-atom’s lifespan. Both schemes share the distinct advantage that cavity decay and atom decay can be neglected. As for the interaction manipulation, our preparation scheme is more feasible than a recent similar one. Compared with the Yeo and Chua’s scheme, our teleportation scheme has significantly reduced the measuring difficulty.We first propose a scheme for preparing the genuine Yeo-Chua 4-qubit entangled state via cavity QED. Using the genuine Yeo-Chua atomic state, we further propose a cavity QED scheme for teleporting an arbitrary two-atom state. In two schemes the large-detuning is chosen and the necessary time is designed to be much shorter than Rydberg-atom’s lifespan. Both schemes share the distinct advantage that cavity decay and atom decay can be neglected. As for the interaction manipulation, our preparation scheme is more feasible than a recent similar one. Compared with the Yeo and Chua’s scheme, our teleportation scheme has significantly reduced the measuring difficulty.

关 键 词：cavity QED PREPARATION genuine Yeo-Chua atomic state teleportation arbitrary two-atom state 

分 类 号：O431.2[机械工程—光学工程]