NQR USING N-V COLOR CENTER

Abstract: Nitrogen vacancy (NV) centre is a small imperfection in the structure of diamond. These NV centres due to their unique properties find applications in various fields like magnetometry, Nano-MRI etc. This is why it is considered to be one of the most promising new technologies for the future of nanoscale magnetic measurements and imaging. N-V colour centres in a diamond lattice are of utmost significance due to their photoluminescence properties. It can achieve significantly high degree of spin polarization with optical illumination. In addition to the defect’s quantum spin states interacting with magnetic fields, the spin state of N-V centres is especially long lived and provides a long coherence time to allow magnetometry with the ability to remain intact up to a few milliseconds at room temperature. This paper throws light on various concepts related to Nuclear Quadrupole resonance (NQR) with respect to NV colour centres in the diamond lattice. In future, the use of these individual, atomic-sized quantum systems can thereby be used inspire new concepts in the fields of cell biology and solid-state physics too.

Keywords: Nitrogen vacancy, magnetometry, photoluminescence, quantum spin, Nuclear Quadrupole resonance.