AI 中文总结
研究脉冲动力学解耦中耗散的作用，通过开发模型并实验观察，发现耗散能产生强失谐依赖干涉信号，以此为基础提出耗散卡尔 - 珀塞尔光谱技术，建立了耗散重塑相干控制的脉冲动力学解耦机制。
AI 中文摘要
脉冲动力学解耦的一个显著特征是抑制驱动量子比特对驱动场与量子比特共振之间静态失谐误差的敏感性。本文表明，以激发态衰变形式存在的耗散可完全改变这种行为，产生具有强失谐依赖性的干涉信号。该信号源于驱动演化过程中的衰变，并依赖于衰变事件后量子比特保留的相干性。我们开发了分析和数值模型来捕捉其潜在机制，并在自由空间锶原子干涉仪和超导transmon量子比特系统中通过实验观察到相同的耗散诱导失谐依赖性。我们还将这种耗散诱导失谐依赖性用作一种称为耗散卡尔 - 珀塞尔光谱（DCPS）的新光谱技术的基础，并将其与传统拉姆齐序列进行比较。我们的结果建立了一种脉冲动力学解耦机制，其中耗散重塑而非仅仅降低相干控制，并且我们预计这些动力学与广泛的量子系统相关。
英文摘要
One of the defining features of pulsed dynamical decoupling is its suppression of a driven qubit's sensitivity to static detuning errors between the drive field and qubit resonance. In this paper, we show that dissipation, in the form of excited-state decay, can change this behavior entirely, producing an interference signal with a strong detuning dependence. This signal arises from decay during driven evolution and relies on coherence retained by the qubit after such a decay event. We develop analytical and numerical models that capture the underlying mechanism and observe this same dissipation-induced detuning dependence experimentally in both a free-space strontium atom interferometer and a superconducting transmon qubit system. We also use this dissipation-induced detuning dependence as the basis for a new spectroscopic technique called Dissipative Carr-Purcell Spectroscopy (DCPS) and compare it with a traditional Ramsey sequence. Our results establish a regime of pulsed dynamical decoupling in which dissipation reshapes, rather than merely degrades, coherent control, and we expect these dynamics to be relevant to a wide range of quantum systems.
