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Experimentally optimized implementation of the Fredkin gate with atoms in cavity QED

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Abstract

A scheme of fast synthesizing the Fredkin gate is proposed in cavity QED via quantum Zeno dynamics. Three atoms are trapped in three different but directly coupled cavities in this scheme. The strictly numerical simulations are given, and the influences of cavity decay and spontaneous emission on the gate operation are analyzed with master equation. The result shows that our scheme is robust against atomic spontaneous emission because of the large detuning. Since the atoms are separated in different cavities, it is easier to manipulate atoms experimentally.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China under Grant No. 11105030, the Natural Science Foundation of Fuzhou University of China under Grant No. XRC-0976 and No. 2010-XQ-28, the funds from Education Department of Fujian Province of China under Grant Nos. JA11005, JA10009 and JA10039, the National Natural Science Foundation of Fujian Province of China under Grant Nos. 2010J01006 and 2012J01269, the Foundation of Ministry of Education of China under Grant No. 212085.

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Authors and Affiliations

  1. Department of Physics, Fuzhou University, Fuzhou, 350002, China

    Li-Cong Song & Yan Xia

  2. Department of Physics, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, China

    Jie Song

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  1. Li-Cong Song
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  2. Yan Xia
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Correspondence to Yan Xia.

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Song, LC., Xia, Y. & Song, J. Experimentally optimized implementation of the Fredkin gate with atoms in cavity QED. Quantum Inf Process 14, 511–529 (2015). https://doi.org/10.1007/s11128-014-0884-x

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