Journal
OPTICS EXPRESS
Volume 28, Issue 24, Pages 35576-35587Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.410158
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Funding
- National Natural Science Foundation of China [11774047]
- Fundamental Research Funds for the Central Universities [2412020FZ026]
- Natural Science Foundation of Jilin Province [JJKH20190279KJ]
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Compared with the idea of universal quantum computation, a direct synthesis of a multiqubit logic gate can greatly improve the efficiency of quantum information processing tasks. Here we propose an efficient scheme to implement a three-qubit controlled-not (Toffoli) gate of neutral atoms based on unconventional Rydberg pumping. By adjusting the strengths of Rabi frequencies of driving fields, the Toffoli gate can be achieved within one step, which is also insensitive to the fluctuation of the Rydberg-Rydberg interaction. Considering different atom alignments, we can obtain a high-fidelity Toffoli gate at the same operation time similar to 7 mu s. In addition, our scheme can be further extended to the four-qubit case without altering the operating time. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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