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Scheme for implementing multitarget qubit controlled-NOT gate of photons and controlled-phase gate of electron spins via quantum dot-microcavity coupled system

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Abstract

We propose a deterministic scheme to implement the multiqubit controlled-NOT gate of photons and multiqubit controlled-phase gate of electron spins with one control qubit and multiple target qubits using quantum dots in double-sided optical cavities. The scheme is based on spin selective photon reflection from the cavity and can be achieved in a nondestructive way. We assess the feasibility of the scheme and show that the gates can be implemented with high average fidelities by choosing the realistic system parameters appropriately. The scheme is useful in quantum information processing such as entanglement preparation, quantum error correction, and quantum algorithms.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China under Grant Nos. 11264042 and 11465020.

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Authors and Affiliations

  1. Department of Physics, College of Science, Yanbian University, Yanji, 133002, Jilin, People’s Republic of China

    Cheng-Hua Bai, Dong-Yang Wang, Shi Hu, Wen-Xue Cui & Hong-Fu Wang

  2. Department of Electronic Information Engineering, College of Engineering, Yanbian University, Yanji, 133002, Jilin, People’s Republic of China

    Xin-Xin Jiang

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  1. Cheng-Hua Bai
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  2. Dong-Yang Wang
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  3. Shi Hu
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Correspondence to Hong-Fu Wang.

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Bai, CH., Wang, DY., Hu, S. et al. Scheme for implementing multitarget qubit controlled-NOT gate of photons and controlled-phase gate of electron spins via quantum dot-microcavity coupled system. Quantum Inf Process 15, 1485–1498 (2016). https://doi.org/10.1007/s11128-015-1197-4

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