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


Nanoparticle photonics

Nanoparticle photonics

Optically functionalized nanoparticles are an ideal structure for a variety of research fields ranging from biophotonics to quantum optics. The research in the group concentrates on multifunctional photonic nanoparticles. Among those particles are diamond nanocrystals and carbon dots as well as differently doped YAG nanocrystals.

Diamond nanoparticles

Few nanometer sized diamond particles can be produced either by shock synthesis or milling. While explosion grown diamond nanoparticles can be as small as 2-4nm milled nanodiamonds only recently have reached single digit size. Diamond nanoparticles are doped in a similar fashion than bulk diamond. Currently reports on nanodiamond containing different color centers are available. However, only nitrogen-vacancy (NV) doped nanodiamonds are available in sizeable quantities so far. The photophysics of defects in nanodiamonds has been studied. NV defects prove to be photostable in few nm sized crystals. However, there are reports on blinking behavior in very small nanoparticles. Photostability as well as spin properties in small nanodiamonds are subject of current research.

YAG nanocrystals

The production of small diamond nanoparticles with versatile surface as well as surface functionality will be a future key challenge.