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  • Multiple-qubit Rydberg quan...
    He, Yucheng; Liu, Jing-Xin; Guo, F.-Q.; Yan, L.-L.; Luo, Ronghui; Liang, Erjun; Su, S.-L.; Feng, M.

    Optics communications, 02/2022, Volume: 505
    Journal Article

    We present a scheme to realize multiple-qubit quantum state transfer and quantum logic gate by combining the advantages of Vitanov-style pulses and dressed-state-based shortcut to adiabaticity (STA) in Rydberg atoms. The robustness of the scheme to spontaneous emission can be achieved by reducing the population of Rydberg excited states through STA technology. Meanwhile, the control errors can be minimized through using the well-designed pulses. Moreover, the dressed-state method applied in the scheme makes the quantum state transfer more smoothly turned on or off with high fidelity and also faster than traditional shortcut to adiabaticity methods. By using Rydberg antiblockade (RAB) effect (Su et al., 2020 1), the multiple-qubit Toffoli gate can be constructed under a general selection conditions of the parameters. •Our gate’s robustness of the spontaneous emission is tunable.•The population transfer could be smoothly turned on or off with high fidelity.•The control errors could be minimized by using Dressed-Vitanov Style pulses.•By using Rydberg antiblockade regime, the parameters chosen could be more flexible.