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Enhancing the fluorescence of shallow nitrogen-vacancy centers in diamond by surface coating with titanium oxide layers
王冠中
Author NameAffiliationE-mail
王冠中 Hefei National Laboratory for Physical Science at Microscale, and Department of Physics, University of Science and Technology of China. Hefei, Anhui, 230026, P.R.China. gzwang@ustc.edu.cn 
Abstract:
We present an enhancement of the fluorescence of shallow (<10 nm) NV? centers by using ALD to deposit titanium oxide layers on the diamond surface. In this way, the shallow NV? center charge states were stabilized, leading to the increasing fluorescence intensity of about 2 times. This surface coating technique could produce a protective layer of controllable thickness without any damages to the solid-state quantum system surface, which might be an approach to the further passivation or packaging techniques for the solid-state quantum devices.
Key words:  shallow NV center, titanium oxide coating layers, charge state stabilization, fluorescence enhancement
FundProject:
Enhancing the fluorescence of shallow nitrogen-vacancy centers in diamond by surface coating with titanium oxide layers
王冠中
摘要:
We present an enhancement of the fluorescence of shallow (<10 nm) NV? centers by using ALD to deposit titanium oxide layers on the diamond surface. In this way, the shallow NV? center charge states were stabilized, leading to the increasing fluorescence intensity of about 2 times. This surface coating technique could produce a protective layer of controllable thickness without any damages to the solid-state quantum system surface, which might be an approach to the further passivation or packaging techniques for the solid-state quantum devices.
关键词:  shallow NV center, titanium oxide coating layers, charge state stabilization, fluorescence enhancement
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