Observing the charge state of substitutional nitrogen via nitrogen vacancy magnetometry

ORAL

Abstract

Defects in diamond have been widely explored as a potential system for quantum information processing. The negatively charged Nitrogen Vacancy (NV-) center is of particular interest because its spin can be operated at ambient conditions and addressed optically with the help of low frequency microwave. It has been suggested that the spin state of the donor electron of the substitutional nitrogen defect (Ns) can be utilized as a quantum register for a spintronics bus [1]. Here, we use the NV center as a local probe to examine the ionization of small Ns ensembles in type 1b diamond. To this end, we implement double electron-electron resonance (DEER), [2] which we articulate with multi-color laser excitation to prepare and subsequently probe the local charge state in the Ns ensemble. We will also discuss the use of polarization transfer techniques from the NVs as a route to probe the spin resilience of photo-generated carriers throughout cycles of ionization from and re-trapping by Ns.
1. M. W. Doherty et al. Physical Review X, 6(4), 041035 (2016)
2. A. Laraoui et al. Nano Letters, 12(7), 3477 (2012)

–

Presenters

  • Artur Lozovoi

    City College of New York

Authors

  • Artur Lozovoi

    City College of New York

  • Damon Daw

    City College of New York

  • Jacob Henshaw

    City College of New York, Department of Physics, City College of New York

  • Harishankar Jayakumar

    Department of Physics and Astronomy, University of Calgary, City College of New York, Physics, City College of New York

  • Pablo Zangara

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

  • Siddharth Dhomkar

    University College London, City College of New York, London Centre for Nanotechnology, University College London

  • Helmut Fedder

    Swabian Instruments, Germany

  • Marcus Doherty

    Australian National University, Physics, Laser Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra

  • Carlos A. Meriles

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