Error budgeting for a controlled-phase gate with strontium-88 Rydberg atoms

Pagano, Alice, Weber, Sebastian, Jaschke, Daniel, Pfau, Tilman, et al. · 2022 · Physical Review Research

| 编号 NA072 | 主题 原生门、寻址、脉冲与标定 | DOI 10.1103/physrevresearch.4.033019 |

摘要

摘要保留原文（英文）

摘要取自 arXiv / 出版方元数据，未作翻译，以保证与原文一致。

2022 · Physical Review Research We study the implementation of a high fidelity controlled-phase gate in a Rydberg quantum computer. The protocol is based on a symmetric gate with respect to the two qubits as experimentally realized by Levine et al [Phys. Rev. Lett. 123, 170503 (2019)], but allows for arbitrary pulse shapes with time-dependent detuning. Optimizing the pulse shapes, we introduce laser pulses which shorten the time spent in the Rydberg state by 10% and reduce the leading contribution to the gate infidelity, i.e., the decay from the Rydberg state. Remarkably, this reduction can be achieved for smooth pulses in detuning and smooth turning on of the Rabi frequency as required in any experimental realization. We carefully analyze the influence of fundamental error sources such as the photon recoil, the microscopic interaction potential, as well as the harmonic trapping of the atoms for an experimentally realistic setup based on strontium-88 atoms. We find that an average gate fidelity above 99.9% is possible for a very conservative estimation of experimental parameters.

全文共 11 页；文本提取件位于 .extracted/papers/NA072.txt（不随站点发布）。

本站词条在引用该文献时，会以 wikilink（sources/NA072）链接到本页；右侧「反向链接」面板自动列出所有引用它的词条。