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arXiv 2602.05959physics.atom-phcond-mat.quant-gasquant-ph
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在低温原子阵列中实现扩展的里德堡寿命

Extended Rydberg Lifetimes in a Cryogenic Atom Array

Department of Physics, Princeton University(普林斯顿大学物理系);Department of Electrical and Computer Engineering, Princeton University(普林斯顿大学电气与计算机工程系)

Junlan Jin, Yue Shi, Youssef Aziz Alaoui, Jingxin Deng, Yukai Lu, Jeff D. Thompson, Waseem S. Bakr

AI总结:

在低温环境下,通过优化光镊阵列和量子比特操控,实现了更长的里德堡寿命,为提高中性原子双量子比特门保真度提供支持。

摘要:

我们报告了在低温黑体辐射环境中实现一个铯-133光学镊子阵列。通过将阵列置于4K辐射屏蔽器内,我们测量到长达406(36)微秒的里德堡寿命,对于55P_{3/2}里德堡态,比室温值长3.3(3)倍。我们利用单光子耦合进行地面-里德堡量子比特的相干操控。我们测量到该跃迁的微小差分动态极化率,有助于减少由于光强波动引起的退相位。我们的结果为提高中性原子双量子比特门保真度铺平了道路,因为其误差预算日益受到地面-里德堡量子比特T_1弛豫的主导。

英文摘要:

We report on the realization of a $^{133}$Cs optical tweezer array in a cryogenic blackbody radiation (BBR) environment. By enclosing the array within a 4K radiation shield, we measure long Rydberg lifetimes, up to $406 (36)\,μ$s for the $55 P_{3/2}$ Rydberg state, a factor of 3.3(3) longer than the room-temperature value. We employ single-photon coupling for coherent manipulation of the ground-Rydberg qubit. We measure a small differential dynamic polarizability of the transition, beneficial for reducing dephasing due to light intensity fluctuations. Our results pave the path for advancing neutral-atom two-qubit gate fidelities as their error budgets become increasingly dominated by $T_1$ relaxation of the ground-Rydberg qubit.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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