Spin-stress and spin-strain coupling in diamond-based hybrid spin oscillator systems
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2019-05-08 |
| Journal | Physical review. B./Physical review. B |
| Authors | Arne Barfuss, Mark Kasperczyk, Johannes Kƶlbl, Patrick Maletinsky |
| Institutions | University of Basel |
| Citations | 43 |
Abstract
Section titled āAbstractāHybrid quantum systems, which combine quantum-mechanical systems with\nmacroscopic mechanical oscillators, have attracted increasing interest as they\nare well suited as high-performance sensors or transducers in quantum\ncomputers. A promising candidate is based on diamond cantilevers, whose motion\nis coupled to embedded Nitrogen-Vacancy (NV) centers through crystal\ndeformation. Even though this type of coupling has been investigated\nintensively in the past, several inconsistencies exist in available literature,\nand no complete and consistent theoretical description has been given thus far.\nTo clarify and resolve these issues, we here develop a complete and consistent\nformalism to describe the coupling between the NV spin degree of freedom and\ncrystal deformation in terms of stress, defined in the crystal coordinate\nsystem XYZ, and strain, defined in the four individual NV reference frames. We\nfind that the stress-based approach is straightforward, yields compact\nexpressions for stress-induced level shifts and therefore constitutes the\npreferred approach to be used in future advances in the field. In contrast, the\nstrain-based formalism is much more complicated and requires extra care when\ntransforming into the employed NV reference frames. Furthermore, we illustrate\nhow the developed formalism can be employed to extract values for the\nspin-stress and spin-strain coupling constants from data published by Teissier\net al..\n
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 2014 - Cavity Optomechanics