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.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Jayakumar H,Henshaw J,Dhomkar S,Pagliero D,Laraoui A,Manson NB,Albu R,Doherty MW,Meriles CAdoi
10.1038/ncomms12660subject
Has Abstractpub_date
2016-08-30 00:00:00pages
12660issn
2041-1723pii
ncomms12660journal_volume
7pub_type
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