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Measurements of magnetic properties on the atomic scale require a sensor with the intrinsic sensitivity for single spin detection, a size comparable to systems under investigation, and the capability for measurements without strongly influencing the spin properties of the studied systems. A prime example for such a quantum sensor is the nitrogen-vacancy (NV) center in diamond.

Using atomic force microscopy (AFM) techniques to position the sensor for magnetic resonance imaging measurements with subatomic precision with respect to the atoms or molecules of interest, highest spatial imaging resolution can be achieved. In combination with the inherent high energy resolution of Electron Spin Resonance and Nuclear Magnetic Resonance spectroscopy and imaging, fundamental properties and spin interactions of atoms and molecules can be investigated on the sub-Å and sub-neV scale.

NV magnetometry is applied to image single (bio)molecules at ultimate spatial resolution and to develop scalable quantum technologies for quantum information processing. Work done in collaboration with the Fellow Group of Prof. Wrachtrup .

Experimental setup

NV-magnetometry confocal setup

NV-magnetometry confocal setup

NV-magnetometry setup combining confocal optics with UHV and low temperature measurement capabilities (4 K)

Scanning NV-magnetometry setup

Scanning NV-magnetometry setup

Development of a new scanning NV-magnetometry setup, which combines confocal optics with atomic-force microscopy.

This new scanning NV-magnetometry include operations in UHV and low temperature (4 K) along with externally applied 3D vector magnetic fields up to ~1 T.


Current members

Former members

Dr. Domenico Paone

Domenico successfully defends his Phd thesis, congratulations Dr. Paone!

Jeffrey Neethi Neethirajan

Jeffery successfully completes his masters thesis with us. Congratulations Jeffrey and we wish you the best in your next journey!

Peter Lendway

Peter finished his three months internship with us. Congratulations Peter and we wish you the best in your next journey!





We are a very young group and we are looking forward to welcome new PhD students and postdoctoral researchers. Interested candidates should directly write to Dr. Aparajita Singha

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