Profile

Dr. Ralf Wunderlich

Dr. Ralf Wunderlich

Academic Staff

Angewandte Quantensysteme
Institutsgebäude
Linnéstraße 5, Room 484
04103 Leipzig

Phone: +49 341 97 - 32706
Fax: +49 341 97 - 32748

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Abstract

In my main research I utilize the spin dynamics of the negatively charged Nitrogen Vacancy (NV) center in diamond to polarize C-13 nuclei in the crystal. The NV center can be polarized in its m=0 ground state just by shining green light on it. In my work I exploit different strategies to transfer the outstanding high electronic spin polarization to nearby C-13 nuclei. With such techniques I obtain a signal to noise ratio of SNR=31 in about two minutes which corresponds to a 23 h standard measurement without hyperpolarization.

Professional career

  • 04/2014 - 12/2017
    PhD student at Division of Nuclear Solid State Physics: "Optically Induced Cross Relaxation via Nitrogen Vacancy Centers for Bulk Diamond 13C Hyperpolarization" (Prof. J. Meijer)
  • 12/2018 - 04/2019
    Postdoc in Leipzig (Division: "Applied Quantum Systems")
  • since 05/2019
    Assistant Professor (Akademischer Assistent) at the division Applied Quantum Systems

Education

  • 10/2006 - 09/2012
    study of physics at the University of Leipzig (Master of Science)

  • Lühmann, T.; John, R.; Wunderlich, R.; Meijer, J. B.; Pezzagna, S.
    Coulomb-driven single defect engineering for scalable qubits and spin sensors in diamond
    Nature Communications. 2019. pp. 1–9.
    DOI: 10.1038/s41467-019-12556-0
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  • Wunderlich, R.; Kohlrautz, J.; Abel, B.; Haase, J.; Meijer, J. B.
    Optically induced cross relaxation via nitrogen-related defects for bulk diamond C-13 hyperpolarization
    Physical Review B. 2017. 96 (22).
    DOI: 10.1103/PhysRevB.96.220407
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  • Räcke, P.; Wunderlich, R.; Gerlach, J. W.; Meijer, J. B.; Spemann, D.
    Nanoscale ion implantation using focussed highly charged ions
    New Journal of Physics. 2020. 22 (8). pp. 083028:1–7.
    DOI: 10.1088/1367-2630/aba0e6
    show details
  • Wunderlich, R.; Kohlrautz, J.; Abel, B.; Haase, J.; Meijer, J. B.
    Investigation of room temperature multispin-assisted bulk diamond C-13 hyperpolarization at low magnetic fields
    Journal of Physics - Condensed Matter. 2018. 30 (30).
    DOI: 10.1088/1361-648X/aacc32
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  • Lühmann, T.; Wunderlich, R.; Schmidt-Grund, R.; Barzola Quiquia, J. L.; Esquinazi, P. D.; Grundmann, M.; Meijer, J. B.
    Investigation of the graphitization process of ion-beam irradiated diamond using ellipsometry, Raman spectroscopy and electrical transport measurements
    Carbon. 2017. pp. 512–517.
    DOI: 10.1016/j.carbon.2017.05.093
    show details

more publications

  • Quantum technology 1 (12-PHY-BMWQT1)

    The lecture covers the generation and application of ion beam techniques. In the area of ion implantation, the classical applications in the field of semiconductor technology are demonstrated and, at the same time, the fundamentals for understanding the application of ion beams for the generation of quantum mechanical systems are provided. Another focus of the lecture is to teach techniques of ion beam analysis.

Research fields

Physics

Specializations

Experimentalphysik, Ionenstrahlphysik, Defekte und Spin-Manipulation in Diamant

Contact for media inquiries

Phone: +49 341 97-32700