Acoustically Driving the Single-Quantum Spin Transition of Diamond Nitrogen-Vacancy Centers
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2020-05-27 |
| Journal | Physical Review Applied |
| Authors | H. Y. Chen, Sunil A. Bhave, Gregory D. Fuchs |
| Institutions | Cornell University, Purdue University West Lafayette |
| Citations | 14 |
Abstract
Section titled āAbstractāUsing a high quality factor 3 GHz bulk acoustic wave resonator device, we demonstrate the acoustically driven single quantum spin transition ($|{m}{s}=0ā©\ensuremath{\leftrightarrow}|\ifmmode\pm\else\textpm\fi{}1ā©$) for diamond nitrogen-vacancy (N-$V$) centers and characterize the corresponding stress susceptibility. A key challenge is to disentangle the unintentional magnetic driving field generated by the device current from the intentional stress driving within the device. We quantify these driving fields independently using Rabi spectroscopy before studying the more complicated case in which both are resonant with the single quantum spin transition. By building an equivalent circuit model to describe the deviceās current and mechanical dynamics, we quantitatively model the experiment to establish their relative contributions and compare with our results. We find that the stress susceptibility of the N-$V$ center spin single quantum transition is around $\sqrt{2}(0.5\ifmmode\pm\else\textpm\fi{}0.2)$ times that for double quantum transition ($|+1ā©\ensuremath{\leftrightarrow}|\ensuremath{-}1ā©$). Although acoustic driving in the double quantum basis is valuable for quantum-enhanced sensing applications, double quantum driving lacks the ability to manipulate N-$V$ center spins out of the $|{m}{s}=0ā©$ initialization state. Our results demonstrate that efficient all-acoustic quantum control over N-$V$ centers is possible, and is especially promising for sensing applications that benefit from the compact footprint and location selectivity of acoustic devices.