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Two Schemes for Generation of Entanglement for Vibronic Collective States of Multiple Trapped Ions

Two Schemes for Generation of Entanglement for Vibronic Collective States of Multiple Trapped Ions
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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.
出处 《Communications in Theoretical Physics》 SCIE CAS CSCD 2007年第3期421-426,共6页 理论物理通讯(英文版)
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.
关键词 multipartite entanglement GHZ state trapped ions 多粒子纠缠 制备方案 GHZ态 俘获离子 电子振动集体态
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