Approximate and Conditional Teleportation of an Unknown Atomic-Entangled State Without Bell-State Measurement |
| |
Authors: | CHEN Chang-Yong LI Shao-Hua |
| |
Affiliation: | 1. Department of Physics and Information Engineering,Hunan Institute of Humanities, Science, and Technology, Loudi 417000, China;2. State Key Laboratory of Magnetic Resonance and Atomicand Molecular Physics, Wuhan Institute of Physics and Mathmatics, the Chinese Academy of Sciences, Wuhan 430071, China;3. Department of Communication and Controlling Engineering, Hunan Institute ofHumanities, Science, and Technology, Loudi 417000, China |
| |
Abstract: | A scheme for approximately and conditionally teleporting an unknown atomic-entangled state in cavity QED is proposed.It is the novel extension of the scheme of [Phys.Rev.A 69 (2004) 064302],where the state to be teleported is an unknown atomic state and where only a time point of system evolution and the corresponding fidelity implementing the teleportation are given.In fact,there exists multi-time points and the corresponding fidclities,which are shown in this paper and then are used to realize the approximate and conditional teleportation of the unknown atomic-entangled state.Naturally,our scheme does not involve the Bell-state measurement or an additional atom,which is required in the Bell-state measurement,only requiring one single-mode cavity.The scheme may be generalized to not only the teleportation of the cavity-mode-entangled-state by means of a single atom but also the teleportation of the unknown trapped-ion-entangled-state in a linear ion trap and the teleportation of the multi-atomic entangled states included in generalized GHZ states. |
| |
Keywords: | teleportation Bell-state measurement cavity QED Rydberg state |
本文献已被 万方数据 等数据库收录! |
| 点击此处可从《理论物理通讯》浏览原始摘要信息 |
|
点击此处可从《理论物理通讯》下载全文 |
|