with respect to the case using {\it perfect} antiblockade condition, which significantly reduces this position error. Moreover, we benchmark the robustness of the gate via taking account of the technical noises, such as the Doppler dephasing due to atomic thermal motion, the fluctuations in laser intensity and laser phase and the intensity inhomogeneity. As compared to other existing antiblockade-gate schemes the predicted gate fidelity is able to maintain at above 0.91 after a very conservative estimation of various experimental imperfections, especially considered for realistic interaction deviation of

δV/V\approx 5.92\%

T\sim20

μ

K. Our work paves the way to the experimental demonstration of Rydberg antiblockade gates in the near future.

DOI: 10.48550/arxiv.2309.06013

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70\%

δV/V\approx 5.92\%

T\sim20

μ

K. Our work paves the way to the experimental demonstration of Rydberg antiblockade gates in the near future.

70%

with respect to the case using the perfect antiblockade condition, which significantly reduces this position error. Moreover, we benchmark the robustness of the gate by taking into account the technical noises, such as the Doppler dephasing due to atomic thermal motion, the fluctuations in laser intensity and laser phase, and the intensity inhomogeneity. Compared to other existing antiblockade-gate schemes, we are able to maintain a predicted gate fidelity above 0.91 after a very conservative estimation of various experimental imperfections, especially considered for a realistic interaction deviation of $\ensuremath{\delta}V/V\ensuremath{\approx}5.92%$ at $T\ensuremath{\sim}20$ $\textmu{}\mathrm{K}$. Our work creates an opportunity for the experimental demonstration of Rydberg antiblockade gates in the near future.

{C}_{Z}

gates with active robustness against two-photon detuning errors. Our method depends on a modified cost function in numerical optimization for shaping gate pulses, which minimizes, not only the ideal gate error but also the fluctuations of gate infidelity over a wide error range. We introduce a family of Rydberg blockade gates with active robustness towards the impacts of versatile noise sources such as Doppler dephasing and ac Stark shifts. The resulting gates with robust pulses can significantly increase the insensitivity to any type of errors acting on the two-photon detuning, benefiting from a relaxed requirement of colder atomic temperatures or more stable lasers for current experimental technology.