Strong coherent coupling of V[TCNE]x magnons to NV center spins
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2020-08-21 |
| Authors | Denis R. Candido, Gregory D. Fuchs, Ezekiel JohnstonāHalperin, Michael E. FlattĆ© |
| Institutions | University of Chicago, The Ohio State University |
Abstract
Section titled āAbstractāHere, we predict a strong coherent coupling in the quantum regime between V[TCNE]x magnons [1,2] and spin coherent NV center levels. First, we calculate analytically the magnon dispersion and fringe field and obtain a NV spin-magnon coupling strength of 8.7 kHz for a disk of diameter 1 Ī¼m. Secondly, we derive an analytical expression for the cooperativity as a function of NV center position for a general magnetic disk on top of the diamond substrate. Using realistic coherence times of both NV centers and V[TCNE]x magnons, we predict cooperativity C ā 6 for NV centers placed within a wide spatial region. Thus our proposal provides an avenue for coupling between NV centers separated by ā1 Ī¼m. The material is based on work supported by the U.S. Department of Energy, Office of Basic Energy Sciences, under Award Number DE-SC0019250. [1] Na Zhu, et. al., Applied Physics Letters 109, 082402 (2016). [2] A. Franson, et. al., APL Materials 7, 121113 (2019).