Dresden 2017 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 87: Carbon: Diamond and others
HL 87.3: Vortrag
Freitag, 24. März 2017, 10:00–10:15, POT 06
Sub-millihertz magnetic spectroscopy with a nanoscale quantum sensor — •Simon Schmitt1, Tuvia Gefen2, Felix M. Stürner1, Thomas Unden1, Gerhard Wolff1, Christoph Müller1, Jochen Scheuer1,3, Boris Naydenov1,3, Matthew Markham4, Sebastien Pezzagna5, Jan Meijer5, Ilai Schwarz3,6, Martin Plenio3,6, Alex Retzker2, Liam P. McGuinness1, and Fedor Jelezko1,3 — 1Institute of Quantum Optics, Ulm University, 89081 Ulm, Germany — 2Racah Institute of Physics, Hebrew University of Jerusalem, 91904 Jerusalem, Israel — 3Center for Integrated Quantum Science and Technology (IQST), Ulm University, 89081 Ulm, Germany — 4Element Six, Harwell Campus, Fermi Avenue, Didcot, OX11 0QR, United Kingdom — 5Institut für Experimentelle Physik II, Universität Leipzig, 04103 Leipzig, Germany — 6Institute for Theoretical Physics, Ulm University, 89081 Ulm, Germany
A general limit on the performance of quantum sensors is their coherence time since this sets the maximum time for coherent signal accumulation. Here we discuss a novel quantum sensing technique which allows a frequency resolution beyond the sensor coherence limit to be obtained. The technique also demonstrates an enhanced precision scaling not previously seen in quantum sensing scenarios. Using single nitrogen vacancy centres in diamond we apply this high resolution magnetometry technique to nanoscale NMR spectroscopy.