Optimization of the double electron-electron resonance for C-centers in diamond

• Published in: arXiv.org
• Main Authors: Rubinas, Olga R, Soshenko, Vladimir V, Bolshedvorskii, Stepan V, Cojocaru, Ivan S, Vorobyov, Vadim V, Sorokin, Vadim N, Vins, Victor G, Yeliseev, Alexander P, Smolyaninov, Andrey N, Akimov, Alexey V
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 04.11.2021
• Subjects: Diamonds; Electrons; Optimization; Physics - Instrumentation and Detectors; Physics - Optics; Physics - Quantum Physics; Precession; Resonance
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.2111.07778

NV centers in diamond recommend themselves as good sensors of environmental fields as well as detectors of diamond impurities. In particular, C-centers, often also called \({{p}_{1}}\)-centers, can be detected via double electron-electron resonance. This resonance can be used to measure the C-center concentration. Here, we measured the concentration of C-centers in several diamond plates and investigated the influence of the free precession time of the NV center on the observed contrast in the measured double electron-electron resonance spectrum. The dependence of the resonance amplitudes and widths on the concentration of C-centers as well as the length of the combined C-center driving and NV-center \(\pi\)-pulse is also discussed. The optimal contrast-free precession time was determined for each C-center concentration, showing a strong correlation with both the concentration of C-centers and the NV-center \({{T}_{2}}\) time.