Berlin 2018 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 50: HL Poster IV

HL 50.30: Poster

Donnerstag, 15. März 2018, 19:00–21:00, Poster B

CVD grown nitrogen-vacancy centers in isotopically controlled <111> diamond — •Christian Osterkamp, Martin Mangold, Priyadharshini Balasubramanian, Boris Naydenov, and Fedor Jelezko — Institut für Quantenoptik, Ulm University, Albert Einstein Allee 11, Ulm 89081, Germany

The negatively charged nitrogen-vacancy center (NV) in diamond is one of the most promising candidates for realizing a quantum sensor. The fluorescence of single NVs can be detected and its electron spin can be polarized, read-out and manipulated at ambient conditions. The creation of NVs on demand is an important step towards quantum magnetic- and electric field sensors [1]. We engineer ¹⁵NVs by delta doping during a plasma enhanced chemical vapor deposition (PECVD) process [2] and we are able to produce isotopically pure diamond by changing the ratio of ¹²C/¹³C atoms in the growth chamber. A high nitrogen incorporation rate combinded with the controllability of the NV axis alignment makes <111> oriented diamond an interesting material for the creation of ensembles. Shallow ensembles can be used for NV magnetometry and the detection of very small electric and magnetic fields [3].