Approximate and Conditional Teleportation of an Unknown Atomic State with Dissipative Jaynes-Cummings Model  

作　　者：CHEN Chang-Yong 

机构地区：[1]Department of Physics and Information Engineering, Hunan Institute of Humanities, Science and Technology, Loudi 417000, China

出　　处：《Communications in Theoretical Physics》2008年第2期355-358,共4页理论物理通讯（英文版）

基　　金：National Natural Science Foundation of China under Grant Nos.10774042 and 10474118;the National Fundamental Research Program under Grant No.2001CB309309;the Science Research Fund of Educational Department of Hunan Province;the Science Research Fund of Hunan Institute of Humanity and Science and Technology under Grant No 2004A014;the Natural Science Foundation of Hunan Province under Grant No.05JJ30005

摘　　要：A scheme for approximately and conditionally teleporting an unknown atomic state in dissipative cavity QED is proposed. It is the extension of the scheme of [Phys. Rev. A 69 （2004） 064302], where the cavity mode decay has not been considered and only a time point of system evolution and the corresponding fidelity implementing the teleportation are given. In fact, the cavity mode decay exists really and must be delt with. In this paper, we investigate the influence from the cavity mode decay on the implementation of the approximate and conditional teleportation by means of the dissipative Jaynes Cummings model and then show the analytical expression of the fidelity of realization of the teleportation. Alternatively, our scheme does not involve an additional atom, only requiring two atoms and one single-mode cavity.

关 键 词：TELEPORTATION quantum entanglement cavity QED 

分 类 号：O413.2[理学—理论物理]