Journal article

Impact of Surface Functionalization on the Quantum Coherence of Nitrogen-Vacancy Centers in Nanodiamonds

Robert G Ryan, Alastair Stacey, Kane M O'Donnell, Takeshi Ohshima, Brett C Johnson, Lloyd CL Hollenberg, Paul Mulvaney, David A Simpson

ACS APPLIED MATERIALS & INTERFACES | AMER CHEMICAL SOC | Published : 2018

Abstract

Nanoscale quantum probes such as the nitrogen-vacancy (NV) center in diamonds have demonstrated remarkable sensing capabilities over the past decade as control over fabrication and manipulation of these systems has evolved. The biocompatibility and rich surface chemistry of diamonds has added to the utility of these probes but, as the size of these nanoscale systems is reduced, the surface chemistry of diamond begins to impact the quantum properties of the NV center. In this work, we systematically study the effect of the diamond surface chemistry on the quantum coherence of the NV center in nanodiamonds (NDs) 50 nm in size. Our results show that a borane-reduced diamond surface can on avera..

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Grants

Awarded by Australian Research Council Centre of Excellence for Quantum Computation and Communication Technology


Awarded by Australian Research Council under the Laureate Fellowship scheme


Awarded by Australia Research Council Center of Excellence in Exciton Science


Funding Acknowledgements

The authors acknowledge fruitful discussions with Dr Jean-Philippe Tetienne and Dr Liam Hall. Spectroscopic analysis for this research was undertaken on the Soft X-ray Spectroscopy beamline at the Australian Synchrotron, Victoria, Australia. This research was supported in part by the Australian Research Council Centre of Excellence for Quantum Computation and Communication Technology (project number CE110001027). This work was also supported by the University of Melbourne through the Centre for Neural Engineering and the Centre for Neuroscience. L.C.L.H. acknowledges support of the Australian Research Council under the Laureate Fellowship scheme (FL130100119). P. M. and R. R. acknowledge support through the Australia Research Council Center of Excellence in Exciton Science (CE170100026).