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Two schemes for generation of entanglement for vibronic collective states of multiple trapped ions

ISSN号：0253-6102
期刊名称：COMMUNICATIONS IN THEORETICAL PHYSICS
时间：0
页码：421-426
语言：中文
分类：O413.3[理学—理论物理;理学—物理]
作者机构：[1]Department of Physics, Southeast University, NanJing 210096, China, [2]Molecular Physics, Center for Cold Atom Physics, Wuhan Institute of Physics and Mathematics, the Chinese Academy of Sciences, Wuhan 430071, China, [3]Graduate School of the Chinese Academy of Sciences, Beijing 100049 ,China, [4]Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
相关基金：The project partially supported by the National Fundamental Research Program of China under Grant No. 2005CB724508 and National Natural Science Foundation of China under Grant Nos. 60478029, 10575040, and 90503010 Acknowledgments The authors thank Prof. Ying Wu for many enlighten- ing discussions.
相关项目：基于二维Cluster态的量子信息处理

作者： Li Jia-Hua|Zheng An-Shou|Yang Wen-Xing|

关键词：多粒子纠缠, 制备方案, GHZ态, 俘获离子, 电子振动集体态, multipartite entanglement, GHZ state, trapped ions

中文摘要：

我们建议二个计划为多重套住的离子的电子振动的集体状态准备纠纷。第一个计划瞄准到为套住的离子的震动的模式产生多国参加的纠纷，它仅仅要求调节到离子的搬运人频率的一根单个激光横梁。我们的计划在调停的刺激政体， correspondingRabi 频率在等于陷井频率工作。在他们的基本重要性以外，自从礼品，这些状态也许为 decoherence 上的试验性的研究的兴趣策划以一个快方法操作。第二个计划瞄准模式 maximallyGreenberger 到多准备连续变量—Horne-Zeilinger 状态。明显的优点是操作时间被可得到的激光紧张，不是由象 off-resonantexcitations 那样的固有的机制仅仅限制。这使在一合理时间与需要的振幅获得多重协调、压榨的状态的纠纷有希望。

英文摘要：

We propose two schemes to prepare entanglement for the vibronic collective states of multiple trapped ions. The first scheme aims to generating multipartite entanglement for vibrational modes of trapped ions, which only requires a single laser beam tuned to the ionic carrier frequency. Our scheme works in the mediated excitation regime, in which the corresponding Rabi frequency is equal to the trap frequency. Beyond their fundamental importance, these states may be of interest for experimental studies on decoherence since the present scheme operates in a fast way. The second scheme aims to preparing the continuous variable multimode maximal1y Greenberger-Horne-Zeilinger state. The distinct advantage is that the operation time is only limited by the available laser intensity, not by the inherent mechanisms such as off-resonant excitations. This makes it promising to obtain entanglernent of multiple coherent and squeezing states with desired amplitudes in a reasonable time.

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