Sample fabrication and metrological characterization of single-photon emitters based on nitrogen vacancy centers in nanodiamonds
نویسندگان
چکیده
Abstract Quantum metrology requires a stable single-photon emission and high purity. Since nitrogen-vacancy (NV-) centers provide both features at room temperature, they are promising candidates for the application in this field [1, 2]. The knowledge about suitable sample preparation technique is crucial, because quality of strongly depends on purity spatial resolvability emitters. This work presents comparison optimization various fabrication techniques nitrogen vacancy center doped nanodiamonds standard cover glasses. followed by comparative characterization samples. includes removal contaminants glass surface. was carried out using peroxymonosulfuric acid (piranha solution, H 2 SO 5 ) to commercially available lye Hellmanex III (by Hellma Analytics). After cleaning glasses, volumes nanodiamond dilutions were applied via spin coating. In subsequent steps, themselves cleaned with acid, too, remove resulting from manufacturing process, e.g. graphite. samples analyzed confocal laser scanning microscope an oil immersion objective. Single-photon determined measuring second order correlation function Hanbury Brown Twiss setup. Spectral analysis revealed presence NV ? - NV°-centers. It shown that cleansing method has immense impact emission, as proven differently manufactured nanodiamonds.
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ژورنال
عنوان ژورنال: Engineering research express
سال: 2021
ISSN: ['2631-8695']
DOI: https://doi.org/10.1088/2631-8695/ac34c2