通过Rabi振荡映射成像的通量沟道诱导的纳米限域与微波增强效应
Flux channeling induced nano-confinement and enhancement of microwaves imaged by Rabi oscillation mapping
AI总结：
本研究利用坡莫合金纳米线的通量沟道实现射频场的局域纳米限域与增强，通过NV中心Rabi振荡高分辨率成像，验证了微波亚300nm聚集、16倍功率增强等特性，为量子调控与片上射频技术提供新方案。
摘要：
随着量子比特技术的快速发展，用于定位、调制和测量射频（RF）场及其对量子比特性能影响的技术至关重要。本文中，我们证明来自坡莫合金纳米线的通量沟道可用于实现射频场的局域空间调制，且调制后的场可利用NV（氮空位）中心的Rabi振荡进行高分辨率映射。Rabi映射图显示，波长约100毫米的微波被集中在300纳米以下的区域，功率增强最高可达约16倍。这种调制在20 dBm的功率范围内保持稳定，且对NV中心的T₂相干时间无不利影响。微磁模拟证实，调制场源于纳米线的杂散场与入射射频场的相长/相消干涉。我们的发现为量子比特调控、射频信号放大以及各类片上射频技术中的局域场映射提供了新途径。
英文摘要：
With rapid advances in qubit technologies, techniques for localizing, modulating, and measuring RF fields and their impact on qubit performance are of the utmost importance. Here, we demonstrate that flux-channeling from a permalloy nanowire can be used to achieve localized spatial modulation of an RF field and that the modulated field can be mapped with high resolution using the Rabi oscillations of an NV center. Rabi maps reveal ~100 mm wavelength microwaves concentrated in sub-300 nm-scale regions with up to ~16$\times$ power enhancement. This modulation is robust over a 20 dBm power range and has no adverse impact on NV $T_2$ coherence time. Micromagnetic simulations confirm that the modulated field results from the nanowire's stray field through its constructive/destructive interference with the incident RF field. Our findings provide a new pathway for controlling qubits, amplifying RF signals, and mapping local fields in various on-chip RF technologies.
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。
