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


Addressing Single Nitrogen-Vacancy Centers in Diamond...

... with Transparent in-Plane Gate Structures

For many applications of the nitrogen-vacancy (NV) center in diamond, the understanding and active control of its charge state is highly desired. In this work, we demonstrate the reversible manipulation of the charge state of a single NV center from NV- across NV0 to a nonfluorescent, dark state by using an all-diamond in-plane gate nanostructure. Applying a voltage to the in-plane gate structure can influence the energy band bending sufficiently for charge state conversion of NV centers. These diamond in-plane structures can function as transparent top gates, enabling the distant control of the charge state of NV centers tens of micrometers away from the nanostructure.

Nano Lett. 2014, 14, 2359?2364
Moritz V. Hauf, Patrick Simon, Nabeel Aslam, Matthias Pfender, Philipp Neumann,
Sebastien Pezzagna, Jan Meijer, Jörg Wrachtrup, Martin Stutzmann, Friedemann Reinhard,
and Jose A. Garrido,