Oxygenated (113) diamond surface for nitrogen-vacancy quantum sensors with preferential alignment and long coherence time from first principles

Abstract

113) diamond surface for nitrogen-vacancy quantum sensors with preferential alignment and long coherence time from first principles, Carbon (2019), doi: https://doi.

Ab initio theory of the nitrogen-vacancy center in diamond

“…Alternatively, (113) diamond can be grown with 79% preferential alignment of NV centers at a considerable growth rate 146,147 . HSE06 DFT calculations have recently obtained a surprising result that nitrogentermination is not preferred for this surface because of introducing surface-related bands into the band gap of diamond but rather oxygen termination may result in an excellent environment for hosting NV centers for quantum sensor applications 148 . On ( 113) diamond surface, oxygen can form so-called epoxy bonds with the surface carbon atoms that are stable according to the ab initio simulations [Fig.…”

Electrical tailoring of the photoluminescence of silicon-vacancy centers in diamond/silicon heterojunctions

“…Color centers in diamond have drawn increasing attention in recent years due to their extraordinary performances in optical applications such as quantum information processing, [1][2][3] quantum sensoring, 4,5 integrated nanophotonics 6,7 and fluorescence imaging. 8 Among various diamond color centers, nitrogen vacancies (NV) and silicon vacancies (SiV) are the two types that are extensively studied.…”

Electron Spin Relaxation in Carbon Materials

“…The relaxation process allows for a better understanding of interdependencies between the participants in this process and its quantum mechanics. Carbon-based materials exist in many forms, e.g., graphene [ 3 , 4 , 5 ], graphene oxide quantum dots [ 6 ], nanotubes [ 7 ], graphene oxide (GO) [ 7 , 8 , 9 , 10 ], GO fibers [ 11 ], GO foams [ 12 ], diamonds [ 13 , 14 , 15 , 16 , 17 , 18 , 19 ], and are required in the fields of energy applications, quantum computing/spintronics and biology [ 20 , 21 ]. The source of an electron paramagnetic resonance (EPR) signal can be related to conduction electrons, e.g., anthracite [ 22 ], or localized paramagnetic states, e.g., GO [ 8 ] and graphene [ 23 , 24 ] across different carbon materials.…”