FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Entangling a Series of Trapped Ions by Moving Cavity Bus |
ZHANG Miao1, JIA Huan-Yu1, WEI Lian-Fu1,2**
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1Quantum Optoelectronics Laboratory, School of Physics and Technology, Southwest Jiaotong University, Chengdu 610031
2State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275
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Cite this article: |
ZHANG Miao, JIA Huan-Yu, WEI Lian-Fu 2011 Chin. Phys. Lett. 28 064213 |
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Abstract Entangling multiple qubits is one of the central tasks of quantum information processing. We propose an approach to entangle a number of cold ions (individually trapped in a string of microtraps) by a moved cavity. The cavity is pushed to include the ions one by one with a uniform velocity and thus the information stored in former ions could be transferred to the latter ones by such a moving cavity bus. Since the positions of the trapped ions are precisely located, the strengths and durations of the ion-cavity interactions can be exactly controlled. As a consequence, by properly setting the relevant parameters, typical multi-ion entangled states, e.g., W state for 10 ions, could be deterministically generated. The feasibility of the proposal is also discussed.
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Keywords:
42.50.Dv
03.67.Bg
37.30.+i
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Received: 15 February 2011
Published: 29 May 2011
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PACS: |
42.50.Dv
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(Quantum state engineering and measurements)
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03.67.Bg
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(Entanglement production and manipulation)
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37.30.+i
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(Atoms, molecules, andions incavities)
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