Lothar Ratschbacher

Lothar Ratschbacher

School of Electrical and Mechanical Engineering

Faculty of Sciences, Engineering and Technology

Dr. Lothar Ratschbacher is a researcher in Dr. Andy Boes’ PIC team at the Precision Measurement Group.
Before his time at the University of Adelaide, he led the Embedded AI Research Group at the applied electronic research institute Silicon Austria Labs, where he oversaw projects integrating artificial intelligence with advanced measurement and sensing systems. He previously worked as a lead space system engineer for instrument performance on the Meteosat Third Generation Satellite’s Infrared Sounder instrument, and held an Alexander-von-Humbold Postdoctoral Fellowship position at the University of Bonn on cavity-enhanced light-matter interfaces 
Dr. Ratschbacher earned his PhD in Experimental Physics from the University of Cambridge, where he investigated an atom-ion hybrid quantum system, and completed his master’s research under Nobel laureate Anton Zeilinger at the Technical University of Vienna. 

  • Journals
    Year Citation
    2022 Pfeifer, H., Ratschbacher, L., Gallego, J., Saavedra, C., Faßbender, A., von Haaren, A., . . . Meschede, D. (2022). Achievements and perspectives of optical fiber Fabry–Perot cavities. Applied Physics B Lasers and Optics, 128(2).
    DOI Scopus60
    2018 Zopf, M., Macha, T., Keil, R., Urunuela, E., Chen, Y., Alt, W., . . . Schmidt, O. G. (2018). Frequency feedback for two-photon interference from separate quantum dots. PHYSICAL REVIEW B, 98(16), 6 pages.
    DOI WoS19
    2018 Martinez-Dorantes, M., Alt, W., Gallego, J., Ghosh, S., Ratschbacher, L., & Meschede, D. (2018). State-dependent fluorescence of neutral atoms in optical potentials. PHYSICAL REVIEW A, 97(2), 12 pages.
    DOI WoS14
    2017 Martinez-Dorantes, M., Alt, W., Gallego, J., Ghosh, S., Ratschbacher, L., Voelzke, Y., & Meschede, D. (2017). Fast Nondestructive Parallel Readout of Neutral Atom Registers in Optical Potentials. PHYSICAL REVIEW LETTERS, 119(18), 5 pages.
    DOI WoS51
    2016 Gallego, J., Ghosh, S., Alavi, S. K., Alt, W., Martinez-Dorantes, M., Meschede, D., & Ratschbacher, L. (2016). High-finesse fiber Fabry-Perot cavities: stabilization and mode matching analysis. APPLIED PHYSICS B-LASERS AND OPTICS, 122(3), 14 pages.
    DOI WoS58
    2015 Reimann, R., Alt, W., Kampschulte, T., Macha, T., Ratschbacher, L., Thau, N., . . . Meschede, D. (2015). Cavity-Modified Collective Rayleigh Scattering of Two Atoms. PHYSICAL REVIEW LETTERS, 114(2), 5 pages.
    DOI WoS101
    2014 Reimann, R., Alt, W., Macha, T., Meschede, D., Thau, N., Yoon, S., & Ratschbacher, L. (2014). Carrier-free Raman manipulation of trapped neutral atoms. NEW JOURNAL OF PHYSICS, 16(11), 12 pages.
    DOI WoS7
    2013 Ratschbacher, L., Sias, C., Carcagni, L., Silver, J. M., Zipkes, C., & Koehl, M. (2013). Decoherence of a Single-Ion Qubit Immersed in a Spin-Polarized Atomic Bath. PHYSICAL REVIEW LETTERS, 110(16), 5 pages.
    DOI WoS72
    2013 Ma, X. -S., Kofler, J., Qarry, A., Tetik, N., Scheidl, T., Ursin, R., . . . Zeilinger, A. (2013). Quantum erasure with causally disconnected choice. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 110(4), 1221-1226.
    DOI WoS71
    2012 Ratschbacher, L., Zipkes, C., Sias, C., & Koehl, M. (2012). Controlling chemical reactions of a single particle. NATURE PHYSICS, 8(9), 649-652.
    DOI WoS134
    2012 Meyer, H. M., Steiner, M., Ratschbacher, L., Zipkes, C., & Koehl, M. (2012). Laser spectroscopy and cooling of Yb<SUP>+</SUP> ions on a deep-UV transition. PHYSICAL REVIEW A, 85(1), 4 pages.
    DOI WoS11
    2011 Zipkes, C., Ratschbacher, L., Sias, C., & Koehl, M. (2011). Kinetics of a single trapped ion in an ultracold buffer gas. NEW JOURNAL OF PHYSICS, 13(5), 18 pages.
    DOI WoS57
    2010 Scheidl, T., Ursin, R., Kofler, J., Ramelow, S., Ma, X. -S., Herbst, T., . . . Zeilinger, A. (2010). Violation of local realism with freedom of choice. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 107(46), 19708-19713.
    DOI WoS153
    2010 Zipkes, C., Palzer, S., Ratschbacher, L., Sias, C., & Koehl, M. (2010). Cold Heteronuclear Atom-Ion Collisions. PHYSICAL REVIEW LETTERS, 105(13), 4 pages.
    DOI WoS106
    2009 Ramelow, S., Ratschbacher, L., Fedrizzi, A., Langford, N. K., & Zeilinger, A. (2009). Discrete Tunable Color Entanglement. PHYSICAL REVIEW LETTERS, 103(25), 4 pages.
    DOI WoS159
    2009 Scheidl, T., Ursin, R., Fedrizzi, A., Ramelow, S., Ma, X. -S., Herbst, T., . . . Zeilinger, A. (2009). Feasibility of 300 km quantum key distribution with entangled states. NEW JOURNAL OF PHYSICS, 11(8), 13 pages.
    DOI WoS82

  • Conference Papers
    Year Citation
    2025 Bishnoi, R., Yaldagard, M. A., Hamdioui, S., Vadivel, K., Sifalakis, M., Rodriguez, N. D., . . . Chersi, F. (2025). Multi-Partner Project: A Deep Learning Platform Targeting Embedded Hardware for Edge-AI Applications (NEUROKIT2E). In 2025 Design, Automation &amp;amp; Test in Europe Conference (DATE) (pp. 1-7). IEEE.
    DOI
    2025 Windhager, D., Ratschbacher, L., Moser, B. A., & Lunglmayr, M. (2025). Spiking Neural Network Accelerator Architecture for Differential-Time Representation using Learned Encoding. In 2025 IEEE International Symposium on Circuits and Systems (ISCAS) (pp. 1-5). IEEE.
    DOI
    2022 Rodriguez, N., Ratschbacher, L., Xu, C., & Julian, P. (2022). Exploration of Deep Neural Networks with Symmetric Simplicial Layers for On-Satellite Earth Observation Processing. In 2022 Argentine Conference on Electronics (CAE) (pp. 31-36). IEEE.
    DOI
    2011 Zipkes, C., Ratschbacher, L., Palzer, S., Sias, C., & Koehl, M. (2011). Hybrid quantum systems of atoms and ions. In P. Hannaford, H. A. Bachor, & P. D. Drummond (Eds.), 22ND INTERNATIONAL CONFERENCE ON ATOMIC PHYSICS Vol. 264 (pp. 7 pages). AUSTRALIA, Cairns: IOP PUBLISHING LTD.
    DOI WoS14
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