High Q-Factor Diamond Optomechanical Resonators with Silicon Vacancy Centers at Millikelvin Temperatures
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2024-05-30 |
| Journal | Nano Letters |
| Authors | Graham Joe, Cleaven Chia, Benjamin Pingault, Michael Haas, Michelle Chalupnik |
| Institutions | Argonne National Laboratory, Harvard University |
| Citations | 9 |
Abstract
Section titled āAbstractāPhonons are envisioned as coherent intermediaries between different types of quantum systems. Engineered nanoscale devices, such as optomechanical crystals (OMCs), provide a platform to utilize phonons as quantum information carriers. Here we demonstrate OMCs in diamond designed for strong for interactions between phonons and a silicon vacancy (SiV) spin. Using optical measurements at millikelvin temperatures, we measure a line width of 13 kHz (<i>Q</i>-factor of ā¼4.4 Ć 10<sup>5</sup>) for a 6 GHz acoustic mode, a record for diamond in the GHz frequency range and within an order of magnitude of state-of-the-art line widths for OMCs in silicon. We investigate SiV optical and spin properties in these devices and outline a path toward a coherent spin-phonon interface.