发表机构
Tsinghua University（清华大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究在自旋-振子架构中实验实现了量子计算增强传感，利用信号驱动的相位预言机接口，首次在玻色子模式中演示Grover搜索，并在超过128光子的希尔伯特空间中实现量子振幅放大，相比经典顺序搜索提取更多信息并分辨更多频率候选。
AI 中文摘要
量子算法具有计算优势，但将其融入量子传感并将这些优势转化为增强的信息获取仍然具有挑战性。在这里，我们在自旋-振子架构中实现了量子计算增强的传感，其中微波腔提供高维量子寄存器，耦合的超导量子比特作为传感器。未知信号直接生成相位预言机操作，在量子计算与传感之间建立了自然的物理接口。我们实验演示了玻色子模式中的首次Grover搜索，并在跨越超过128个光子的希尔伯特空间中观察到量子振幅放大。在相同的传感迭代次数下，我们的协议比经典顺序搜索提取更多信息并分辨更多频率候选。我们的结果确立了信号驱动的预言机作为利用基于预言机的量子算法并实现量子计算增强传感的途径。
英文摘要
Quantum algorithms offer computational advantages, yet incorporating them into quantum sensing and converting these advantages into enhanced information acquisition remains challenging. Here, we realize quantum-computing-enhanced sensing in a spin-oscillator architecture, where a microwave cavity provides a high-dimensional quantum register and a coupled superconducting qubit serves as the sensor. The unknown signal directly generates the phase oracle operation, establishing a natural physical interface between quantum computation and sensing. We experimentally demonstrate the first Grover search in a bosonic mode and observe quantum amplitude amplification in a Hilbert space spanning more than 128 photons. For the same number of sensing iterations, our protocol extracts more information and resolves more frequency candidates than classical sequential search. Our results establish signal-driven oracles as a route for harnessing oracle-based quantum algorithms and realizing quantum-computing-enhanced sensing.
Comments7 pages, 3 figures
