August 30, 2021 to September 3, 2021
University of Innsbruck
Europe/Zurich timezone

【421】Discrete-time signal processing with NV centers

Sep 1, 2021, 2:00 PM
Room E

Room E

Talk Atomic Physics and Quantum Optics Atomic Physics and Quantum Optics


Kristian Cujia


We developed a spectroscopy method for quantum sensing based on sequential weak measurements to detect the free-induction decay (FID) signal of a single carbon-13 nuclear spin. We showed that such measurements mitigate the unwanted quantum back-action, and provide a number of further advantages, including a large frequency bandwidth and possibility of efficient Fourier Nuclear Magnetic Resonance (NMR) methods. We further extended our strategy to image large nuclear spin clusters with three-dimensional atomic resolution. We demonstrated the detection of up to 29 carbon-13 nuclear spins in diamond, and showed how, by applying information-criteria principles to the detected signals, the three-dimensional atomic positions of nuclei in a diamond lattice can be recovered.

Primary authors

Prof. Christian Degen (ETH Zurich) Dr John Abendroth (ETH Zurich) Dr Jonathan Zopes (ETH Zurich) Mr Konstantin Herb (ETH Zurich) Kristian Cujia

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