סמינר כימיה פיזקאלית ואנאליטית
מרצה: Sergey Elfimchev
מיקום: חדר סמינרים פקולטי
Nitrogen-vacancies () in the diamond lattice have been extensively studied in the past for several reasons. centers can act as single photon emitters in the visible range with absolute photo stability at room temperature. They have found applications in novel fields like quantum computation and single-spin magnetometry due to the possibility to prepare and read out their corresponding spin state optically and because of long spin coherence times. centers occur in several charged states, where the neutral () and the negatively charged () states are the most common ones. is the prevailing state for centers buried deep in high-purity material. However, it has been observed to become unstable and to turn into close to the surface of diamonds. The charge state control of the center became a crucial engineering and scientific challenge. In the last few years, it was reported that charge-state changes between and can be induced by laser illumination, surface termination, and combined of various optical and electrical operations. This work is a review of the recent status for charge state control ability with respect to different applications.
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