Cluster States from Quantum Logic Gates with Trapped Ions in Thermal Motion

YANG Wen-Xing; ZHAN Zhi-Ming; LI Jia-Hua

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Cluster States from Quantum Logic Gates with Trapped Ions in Thermal Motion

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Following the recent proposal by Briegel et al. [Phys. Rev. Lett. 86 (2001) 910], a procedure is proposed for one-step realizing quantum control phase gates with two trapped ions in thermal motion. It is shown that the scheme can also be used to create a new special type of entangled states, i.e., cluster states of many trapped ions. In the scheme the two-trapped ions are simultaneously excited by a single laser beam and the frequency of the laser beam is slightly off resonance with the first lower vibration sideband of the trapped ions. The distinct advantage of the scheme is that it does not use the vibrational mode as the data bus. Furthermore, our scheme is insensitive to both the initial motional state and heating (or decay) as long as the system remains in the Lamb-Dicke regime.

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《中国物理快报：英文版》 |2006年第1期|120-123|共4页
作者
YANG Wen-Xing; ZHAN Zhi-Ming; LI Jia-Hua;
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State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Center for Cold Atom Physics,Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071;

Department of Physics, Huazhong University of Science and Technology, Wuhan 430074;

Department of Physics, Huazhong University of Science and Technology, Wuhan 430074;

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正文语种 chi
中图分类物理学;
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Cluster States from Quantum Logic Gates with Trapped Ions in Thermal Motion

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