揭示量子比特频率的无意周期性调制
Revealing inadvertent periodic modulation of qubit frequency
AI总结：
该研究提出利用周期性重复Ramsey测量功率谱中的尖锐峰，来揭示和表征量子比特频率的无意慢速周期性调制，还分析了两类涨落对谱的影响，结果与模拟高度一致。
摘要：
本文阐述了揭示并表征量子比特频率慢速周期性调制的方法。这类调制可能源自多种因素，且会影响量子比特的稳定性。研究表明，该调制会在周期性重复Ramsey测量结果的功率谱中产生极为尖锐的峰，通过峰的位置与形状可同时确定调制的频率和幅度。本文还探究了量子比特频率的额外慢速涨落及调制频率涨落对功率谱的影响，分析结果与大量模拟结果高度吻合。
英文摘要：
The paper describes the means to reveal and characterize slow periodic modulation of 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 finding 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.
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。
