Multi-Spin-Assisted Optical Pumping of bulk <sup>13</sup>C nuclear spin polarization in diamond

ORAL

Abstract

One of the most remarkable properties of the nitrogen-vacancy (NV) center in diamond is that optical illumination initializes its electronic spin almost completely, a feature that can be exploited to polarize other spin species in their proximity. Here we use field-cycled nuclear magnetic resonance (NMR) to investigate the mechanisms of spin polarization transfer from NVs to 13C spins in diamond at room temperature. We focus on the dynamics near 51 mT, where a fortuitous combination of energy matching conditions between electron and nuclear spin levels gives rise to alternative polarization transfer channels. By monitoring the 13C spin polarization as a function of the applied magnetic field, we show 13C spin pumping takes place via a multi-spin cross relaxation process involving the NV- spin and the electronic and nuclear spins of neighboring P1 centers. Further, we find that this mechanism is insensitive to the crystal orientation relative to the magnetic field.

*Authors acknowledge support from the National Science Foundation through grants NSF-1309640 and NSF-1619896,to Research Corporation for Science Advancement through a FRED Award; and to NSF CREST Center IDEALS, NSF-HRD-1547830

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Presenters

  • Carlos Meriles

    • Physics, City College of New York CUNY
    • Department of Physics, CUNY-City College of New York

Authors

  • Daniela Pagliero

    • Physics, City College of New York CUNY

  • Rama Kamineni

    • Physics, City College of New York CUNY

  • Pablo Zangara

    • Physics, City College of New York CUNY
    • Department of Physics, City College of New York,City University of New York (CUNY)

  • Siddharth Dhomkar

    • Physics, City College of New York CUNY
    • City College of New York CUNY

  • Henry Wong

    • Physics, City College of New York CUNY

  • Andrea Abril

    • Physics, Universidad Nacional de Colombia

  • Nabeel Aslam

    • University Stuttgart
    • Physics, University of Stuttgart
    • Physics Department, University of Stuttgart

  • Ashok Ajoy

    • Chemistry, University of California, Berkeley

  • Anna Parker

    • Chemistry, University of California, Berkeley

  • Jonathan King

    • Chemistry, University of California, Berkeley

  • Claudia Avalos

    • Chemistry, University of California, Berkeley

  • Joerg Wrachtrup

    • Physics, University of Stuttgart

  • Alexander Pines

    • Chemistry, University of California, Berkeley

  • Carlos Meriles

    • Physics, City College of New York CUNY
    • Department of Physics, CUNY-City College of New York