Speaker
Description
Nitrogen-vacancy (NV) centers diamond are versatile quantum systems that combine single photon emission and spin-dependent fluorescence. These properties have made NV centers central in advancements in quantum information and quantum sensing. In particular, NV-based magnetometry leverages the Zeeman Effect to achieve high spatial resolution and sensitivity through the detection of fluorescence. Furthermore, the chemical inertness and biocompatibility of diamonds makes the NV-based magnetometer an ideal sensor for both non-biological and biological sensing applications.
Recently femtosecond lasers have emerged as a promising tool for creating NV centers in diamond. This project aims to investigate the quality of NV centers produced by illuminating diamond with a 515 nm laser, exploring the impact of laser parameters during both defect creation and the subsequent annealing process. Comparisons may also be made with NV centers fabricated using focused ion beam and high temperature irradiation techniques.
The characterization will focus on the fluorescence properties of NV centers under varying fabrication conditions. Techniques will include hyperspectral confocal microscopy for wavelength-resolved studies, fluorescence lifetime imaging microscopy (FLIM) for temporal analysis
Moreover, Optically Detected Magnetic Resonance (ODMR) experiments shall be performed to assess their magnetic field sensing capabilities. The magnetic sensitivity of NV centers will be quantified, and the most sensitive configurations will be tested in a proof-of-concept application.
