Double Electron Spin Resonance of Engineered Atomic Structures on a Surface

S. Phark, Yi Chen, C. Wolf, H. Bui, Yu Wang, M. Haze, Jinkyung Kim, C. Lutz, A. Heinrich, Yujeong Bae
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引用次数: 1

Abstract

Atomic-scale control of multiple spins with individual addressability enables the bottom-up design of functional quantum devices. Tailored nanostructures can be built with atomic precision using scanning tunneling microscopes, but quantum-coherent driving has thus far been limited to a spin in the tunnel junction. Here we show the ability to drive and detect the spin resonance of a remote spin using the electric field from the tip and a single-atom magnet placed nearby. Read-out was achieved via a weakly coupled second spin in the tunnel junction that acted as a quantum sensor. We simultaneously and independently drove the sensor and remote spins by two radio frequency voltages in double resonance experiments, which provides a path to quantum-coherent multi-spin manipulation in customized spin structures on surfaces. One-Sentence Summary: Using a scanning tunneling microscope, we simultaneously control two spins using one tip, paving the way for multi-spin-qubit operations on surfaces.
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表面工程原子结构的双电子自旋共振
具有单个可寻址性的多个自旋的原子尺度控制使自下而上的功能量子器件设计成为可能。使用扫描隧道显微镜可以以原子精度构建定制的纳米结构,但量子相干驱动迄今为止仅限于隧道结中的自旋。在这里,我们展示了利用尖端的电场和放置在附近的单原子磁铁驱动和检测远程自旋共振的能力。读出是通过隧道结中充当量子传感器的弱耦合第二自旋实现的。在双共振实验中,我们用两种射频电压同时独立驱动传感器自旋和远端自旋,为在表面定制自旋结构中实现量子相干多自旋操纵提供了一条途径。利用扫描隧道显微镜,我们使用一个尖端同时控制两个自旋,为表面上的多自旋量子比特操作铺平了道路。
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