Strongly polarizing weakly coupled 13C nuclear spins with optically pumped nitrogen-vacancy center
Abstract
Enhancing the polarization of nuclear spins surrounding the nitrogen-vacancy (NV) center in diamond has attracted widespread attention recently due to its various applications. Here we present an analytical theory and comprehensive understanding on how to optimize the dynamic nuclear polarization by an optically pumped NV center near the ground state level anticrossing. Our results not only provide a parameter-free explanation and a clearly physics picture for the recently observed polarization dependence on the magnetic field for strongly coupled 13C nuclei [H. J. Wang et al., Nat. Commun. 4, 1 (2013)], but also demonstrate the possibility to strongly polarize weakly coupled 13C nuclei under weak optical pumping and suitably chosen magnetic field. This allows sensitive magnetic control of the 13C nuclear spin polarization for NMR applications and significant suppression of the 13C nuclear spin noise to prolong the NV spin coherence time.
Turn this paper into a lesson
ArcXiv compiles a structured reading guide from this paper's metadata: plain-English importance, contributions, prerequisite concepts, which sections to read first, flashcards, and a quiz. Grounded in the abstract, never invented.