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Erlangen 2018 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 62: Poster: Quantum Optics and Photonics V

Q 62.51: Poster

Thursday, March 8, 2018, 16:15–18:15, Redoutensaal

High frequency precision quantum metrology — •Nicolas Staudenmaier1, Simon Schmitt1, Liam P. McGuinness1,2, and Fedor Jelezko1,21Institute for Quantum Optics, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany — 2Center for Integrated Quantum Science and Technology, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany

Due to their small size and high sensitivity, nitrogen vacancy centers in diamonds are excellent sensors for nanoscale nuclear and electron magnetic resonance experiments. Recently, detection of single molecules and the study of their structure and dynamics has been demonstrated. A crucial point for single molecule spectroscopy is the spectral resolution. It was shown that the spectral precision of NV magnetometry can exceed the sensor coherence time and is only limited by the clock stability of an external oscillator [1]. While previous experiments were restricted to measure frequencies up to a few MHz, here we present and discuss a new technique which extends the measurement range to high frequency fields. The new technique we demonstrate allows detection of a GHz magnetic field with sub-Hz linewidth, using a quantum coherent sensor.

[1] Simon Schmitt et al. "Submillihertz magnetic spectroscopy performed with a nanoscale quantum sensor." Science 356 (2017): 832-837

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