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Optical patterning of trapped charge in nitrogen-doped diamond

Author

Listed:
  • Harishankar Jayakumar

    (CUNY-City College of New York)

  • Jacob Henshaw

    (CUNY-City College of New York
    CUNY-Graduate Center)

  • Siddharth Dhomkar

    (CUNY-City College of New York)

  • Daniela Pagliero

    (CUNY-City College of New York)

  • Abdelghani Laraoui

    (CUNY-City College of New York)

  • Neil B. Manson

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

  • Remus Albu

    (CUNY-City College of New York)

  • Marcus W. Doherty

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

  • Carlos A. Meriles

    (CUNY-City College of New York
    CUNY-Graduate Center)

Abstract

The nitrogen-vacancy (NV) centre in diamond is emerging as a promising platform for solid-state quantum information processing and nanoscale metrology. Of interest in these applications is the manipulation of the NV charge, which can be attained by optical excitation. Here, we use two-colour optical microscopy to investigate the dynamics of NV photo-ionization, charge diffusion and trapping in type-1b diamond. We combine fixed-point laser excitation and scanning fluorescence imaging to locally alter the concentration of negatively charged NVs, and to subsequently probe the corresponding redistribution of charge. We uncover the formation of spatial patterns of trapped charge, which we qualitatively reproduce via a model of the interplay between photo-excited carriers and atomic defects. Further, by using the NV as a probe, we map the relative fraction of positively charged nitrogen on localized optical excitation. These observations may prove important to transporting quantum information between NVs or to developing three-dimensional, charge-based memories.

Suggested Citation

  • Harishankar Jayakumar & Jacob Henshaw & Siddharth Dhomkar & Daniela Pagliero & Abdelghani Laraoui & Neil B. Manson & Remus Albu & Marcus W. Doherty & Carlos A. Meriles, 2016. "Optical patterning of trapped charge in nitrogen-doped diamond," Nature Communications, Nature, vol. 7(1), pages 1-8, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12660
    DOI: 10.1038/ncomms12660
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