Coherent acoustic control of a single silicon vacancy spin in diamond
Coherent acoustic control of a single silicon vacancy spin in diamond
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DOI：
10.1038/s41467-019-13822-x
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发表时间：
2020-01-10
影响因子：
16.6
通讯作者：
Loncar, Marko
中科院分区：
文献类型：
--
作者：
Maity, Smarak;Shao, Linbo;Loncar, Marko
声子被认为是通用的量子换能器，因为它们能够耦合到各种各样的量子系统。在这些系统中，已知固态点缺陷自旋是长寿命的光学可访问量子存储器。最近，研究表明，金刚石中的反转对称缺陷，如带负电荷的硅空位中心（SiV），具有对应变高度敏感的自旋量子位。在这里，我们利用这种应变响应来实现单个SiV自旋的相干和低功率声学控制，并执行单个自旋的声学驱动拉姆齐干涉测量。我们的研究结果表明，这些系统的自旋控制的有效方法，提供了一个强大的自旋-声子耦合和声子介导的混合量子系统的路径。
Phonons are considered to be universal quantum transducers due to their ability to couple to a wide variety of quantum systems. Among these systems, solid-state point defect spins are known for being long-lived optically accessible quantum memories. Recently, it has been shown that inversion-symmetric defects in diamond, such as the negatively charged silicon vacancy center (SiV), feature spin qubits that are highly susceptible to strain. Here, we leverage this strain response to achieve coherent and low-power acoustic control of a single SiV spin, and perform acoustically driven Ramsey interferometry of a single spin. Our results demonstrate an efficient method of spin control for these systems, offering a path towards strong spin-phonon coupling and phonon-mediated hybrid quantum systems.