Two Schemes for Generation of Entanglement for Vibronic Collective States of Multiple Trapped Ions |
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Authors: | YANG Wen-Xing LI Jia-Hua ZHENG An-Shou |
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Affiliation: | 1. Department of Physics, Southeast University, Nanjing 210096, China;2. State Key Laboratory of Magnetic Resonance and Atomic andMolecular Physics, Center for Cold Atom Physics, Wuhan Institute of Physics andMathematics, 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 Scienceand Technology, Wuhan 430074, China |
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Abstract: | 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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Keywords: | multipartite entanglement GHZ state trapped ions |
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