Revealing inadvertent periodic modulation of qubit frequency

被引：0

作者：

Wudarski, Filip ^{[1
]}

Zhang, Yaxing ^{[2
]}

Atalaya, Juan ^{[2
]}

Dykman, M. I. ^{[3
]}

机构：

[1] Univ Space Res Assoc USRA, Res Inst Adv Comp Sci RIACS, Mountain View, CA 94043 USA

[2] Google Quantum AI, Santa Barbara, CA 93111 USA

[3] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

来源：

PHYSICAL REVIEW APPLIED | 2024年 / 22卷 / 05期

关键词：

Compendex;

D O I：

10.1103/PhysRevApplied.22.054065

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The paper describes the means to reveal and characterize slow periodic modulation of the qubit frequency. Such modulation can come from different sources and can impact qubit stability. We show that the modulation leads to very sharp peaks in the power spectrum of outcomes of periodically repeated Ramsey measurements. The positions and shapes of the peaks allow us to find both the frequency and the amplitude of the modulation. We also explore how additional slow fluctuations of the qubit frequency and fluctuations of the modulation frequency affect the spectrum. The analytical results are in excellent agreement with extensive simulations.

引用

页数：17

共 30 条

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