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Diamond Materials

Diamond Materials for Quantum Application

23. September 2014: The DFG research group FOR 1493 “Diamond Materials and Quantum Applications” goes into its second funding period. FOR1493 is a national research consortium funded by the Deutsche Forsch-ungsgemeinschaft.

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ERC Advanced Grant

ERC

Nanoscale Detection of a Single Fundamental Charge

Nanoscale Detection of a Single Fundamental Charge in Ambient Conditions Using the NV- Center in Diamond

Single charge detection with nanoscale spatial resolution in ambient conditions is a current frontier in metrology that has diverse interdisciplinary applications. Here, such single charge detection is demonstrated using two nitrogen-vacancy (NV) centers in diamond. One NV center is employed as a sensitive electrometer to detect the change in electric field created by the displacement of a single electron resulting from the optical switching of the other NV center between its neutral (NV0) and negative (NV-) charge states.

The nanoscale detection of a single fundamental charge allows to gain insight into the charge dynamics of the NV center and its surrounding experiment. E.g. the field data suggests, that the charge is ionized to the conducting band, and not as suggested in other models is transferred to a close by charge trap. This technique therefore allows to gain insight into the local nanoscale charge distribution and opens up a pathway to detect the charge distribution outside of diamond using shallow implanted NV centers or nanodiamonds.

Reference:
Nanoscale Detection of a Single Fundamental Charge in Ambient Conditions Using the NV- Center in Diamond
Florian Dolde, Marcus W. Doherty, Julia Michl, Ingmar Jakobi, Boris Naydenov, Sebastien Pezzagna, Jan Meijer, Philipp Neumann, Fedor Jelezko, Neil B. Manson, and Jörg Wrachtrup
Physical Review Letters 112, 097603 2014 – Published March 3, 2014