Berlin 2015 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 21: Poster IB (Oxide semiconductors; II-VI and group IV semiconductors; Nanotubes and Buckyballs)
HL 21.31: Poster
Montag, 16. März 2015, 15:00–20:00, Poster B
Towards stabilization of the negatively charged nitrogen-vacancy center in diamond — •Samuel Müller1, Jochen Scheuer1, Boris Naydenov1, Junichi Isoya2, and Fedor Jelezko1 — 1Institut für Quantenoptik, Universität Ulm, Ulm, Germany — 2Research Center for Knowledge Communities, University of Tsukuba, Tsukuba, Japan
The nitrogen-vacancy centers in diamond (NV) are very promising solid state single quantum systems with a wide application as qubits and ultra sensitive nano-scale field sensors. The NV is constantly changing its charged state from NV0 to NV-, whereas the latter is relevant for the applications. We propose a new method of stabilizing the NV- state via doping the diamond with an electron donor (phosphorus) and continuous irradiation with infrared light. We show that the NV- spin state can be measure using an orange laser light, which usually leads to photo-ionization in standard diamond crystals. We performed single shot nuclear magnetic resonance measurements in order to determine the degree of stability in the NV- state [1,2].
[1] Neumann, Philipp, et al. "Single-shot readout of a single nuclear spin." Science 329.5991 (2010): 542-544.
[2] Waldherr, G., et al. "Dark states of single nitrogen-vacancy centers in diamond unraveled by single shot NMR." Physical review letters 106.15 (2011): 157601.