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Compact implementation of the \(\hbox {(SWAP)}^a\) gate on diamond nitrogen-vacancy centers coupled to resonators

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Abstract

A compact quantum circuit for implementing the \(\hbox {(SWAP)}^a\) gate for \(0<a\le 1\) on two diamond nitrogen-vacancy centers (NV) is designed by using some input–output processes of a single photon. Our proposal is interesting because the \(\hbox {(SWAP)}^a\) gate is universal for quantum computing, and the diamond NV center has a long coherence time. Our scheme is compact, and additional electronic qubits are not employed, which beats its synthesis procedure in terms of controlled-not gates and single-qubit rotations largely. Moreover, our scheme is feasible with current experiment technology.

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Acknowledgments

This work is supported by the National Natural Science Foundation of China under Grant No. 11174039 and NECT-11-0031.

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  1. Department of Physics, Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing, 100875, China

    Hai-Rui Wei & Fu-Guo Deng

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  1. Hai-Rui Wei
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Wei, HR., Deng, FG. Compact implementation of the \(\hbox {(SWAP)}^a\) gate on diamond nitrogen-vacancy centers coupled to resonators. Quantum Inf Process 14, 465–477 (2015). https://doi.org/10.1007/s11128-014-0868-x

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