Gerhard Rempe

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Gerhard Rempe, 2016

Gerhard Rempe (born April 22, 1956 in Bottrop ) is a German physicist , director at the Max Planck Institute for Quantum Optics and honorary professor at the Technical University of Munich . He has conducted pioneering experiments in atomic and molecular physics , quantum optics and quantum information processing .

Career

Gerhard Rempe studied mathematics and physics at the Universities of Essen and Munich from 1976 to 1982. Since 1983 he has been a member of the Catholic student association KDStV Tuiskonia Munich. In 1986 he did his doctorate at the University of Munich under Herbert Walther with the dissertation Investigation of the interaction of Rydberg atoms with radiation . In the same year he received his first offer of a permanent position as a lecturer at the Free University of Amsterdam in the Netherlands. Rempe stayed in Munich and completed his habilitation in 1990 with the book Quanteneffekte im Ein-Atom-Maser . He was then a lecturer from 1990 to 1991 and a Robert Andrews Millikan Fellow from 1990 to 1992 at the California Institute of Technology in Pasadena , California. In 1992 he accepted a professorship for experimental physics at the University of Konstanz . In 1999 he was appointed a scientific member of the Max Planck Society and a director at the Max Planck Institute for Quantum Optics as well as an honorary professor at the Technical University of Munich.

Act

Gerhard Rempe is considered a pioneer in the research area of ​​cavity quantum electrodynamics. He was the first to observe how a single atom repeatedly emits and absorbs a single particle of light . He carried out early experiments with microwave photons in superconducting cavities. He later expanded his interest to include optical photons between highly reflective mirrors. With his experiments he laid the foundation for the development of quantum nonlinear optics, in which a single particle , atom or photon , causes an effect that cannot be produced by many particles.

Rempe has used his findings from basic research to develop new types of interfaces between light and matter. They connect the everyday world with the quantum world and have application potential as transmitters, receivers and stores of information in a future global quantum network. An unusual property of the interface is its ability to detect individual light quanta non-destructively, which opens up new perspectives for a scalable quantum computer . The interface is also suitable for the observation and controlled movement of a single atom in real time and for the generation of quantum light with a noise below the shot noise level.

Rempe also did pioneering work in the fields of atomic optics and quantum gases . With an atomic interferometer he was able to prove experimentally that when observing a particle through a double slit arrangement, the quantum mechanical wave-particle dualism is based on entanglement instead of Heisenberg's uncertainty relation for position and momentum, as is often described in textbooks. He produced the first Bose-Einstein condensate outside the USA and thus produced, among other things, a gas of molecules that is strongly correlated via the quantum Zeno effect .

In a third research focus, Rempe is dedicated to the generation of an ultracold gas from polyatomic molecules. The focus is on the development of novel methods for slowing down complex molecules using a centrifuge and for cooling such molecules using the Sisyphus effect . The aim is to understand chemical reactions at low temperatures, to open new reaction channels, to prepare molecules for precision experiments, and to produce neutral many-particle systems with a long-range electrical interaction.

In addition to his research and teaching activities, Rempe was or is involved in academic self-administration, for example as the spokesman for the Quantum Optics and Photonics Association of the German Physical Society , as the curator of several magazines such as Physics in Our Time , Journal of Optics and Optics Communications , as chairman a selection committee of the European Research Council, as managing director of the Max Planck Institute for Quantum Optics and as chairman of the award committee of the Stern-Gerlach Medal of the German Physical Society . Rempe currently (as of 2018) has an h-index of 62.

literature

  • Roland Wengenmayr: The trained atom , in: MaxPlanckForschung Heft 1/2012, pages 48–55, online (article about Rempe and his work)

Web links

Individual evidence

  1. ↑ Profile Gerhard Rempe at the Max Planck Society ( Memento from February 27, 2018 in the Internet Archive )
  2. ↑ Observation of Quantum Collapse and Revival in a One-Atom Matter , G. Rempe, H. Walther, and N. Klein, Physical Review Letters 58, 353 (1987)
  3. ↑ Observation of Normal Mode Splitting for an Atom in an Optical Cavity , RJ Thompson, G. Rempe, and HJ Kimble, Physical Review Letters 68, 1132 (1992)
  4. ↑ Optical Bistability and Photon Statistics in Cavity Quantum Electrodynamics , G. Rempe, RJ Thompson, RJ Brecha, WD Lee, and HJ Kimble, Physical Review Letters 67, 1727 (1991)
  5. ↑ Single-atom single-photon quantum interface , T. Wilk, SC Webster, A. Kuhn, and G. Rempe, Science 317, 488 (2007)
  6. ↑ An Elementary Quantum Network of Single Atoms in Optical Cavities , S. Ritter, C. Nölleke, C. Hahn, A. Reiserer, A. Neuzner, M. Uphoff, M. Mücke, E. Figueroa, J. Bochmann, and G Rempe, Nature 484, 195 (2012)
  7. ↑ Nondestructive Detection of an Optical photon , A. Reiserer, S. Ritter, and G. Rempe, Science 342, 1349 (2013)
  8. ↑ A quantum gate between a flying optical photon and a single trapped atom , A. Reiserer, N. Kalb, G. Rempe, and S. Ritter, Nature 508, 237–240 (2014)
  9. ↑ FAZ: Two light quanta practice arithmetic (August 7th, 2016)
  10. ↑ Trapping an atom with single photons , PWH Pinkse, T. Fischer, P. Maunz, and G. Rempe, Nature 404, 365 (2000)
  11. ↑ Photon-by-photon feedback control of a single-atom trajectory , A. Kubanek, M. Koch, C. Sames, A. Ourjoumtsev, PWH Pinkse, K. Murr, and G. Rempe, Nature 462, 898 (2009)
  12. ↑ Observation of squeezed light from one atom excited with two photons , A. Ourjoumtsev, A. Kubanek, M. Koch, C. Sames, PWH Pinkse, G. Rempe, and K. Murr, Nature 474, 623 (2011)
  13. ↑ Origin of quantum-mechanical complementarity probed by a 'which-way' experiment in an atom interferometer , S. Dürr, T. Nonn, and G. Rempe, Nature 395, 33 (1998)
  14. ↑ Strong dissipation inhibits losses and induces correlations in cold molecular gases , N. Syassen, DM Bauer, M. Lettner, T. Volz, D. Dietze, JJ García-Ripoll, JI Cirac, G. Rempe, and S. Dürr, Science 320, 1329 (2008)
  15. ↑ Continuous centrifuge decelerator for polar molecules , S. Chervenkov, X. Wu, J. Bayerl, A. Rohlfes, T. Gantner, M. Zeppenfeld, and G. Rempe, Physical Review Letters 112, 013001 (2014)
  16. ↑ Sisyphus Cooling of Electrically Trapped Polyatomic Molecules , M. Zeppenfeld, BGU Englert, R. Glöckner, A. Prehn, M. Mielenz, C. Sommer, LD van Buuren, M. Motsch, and G. Rempe, Nature 491, 570 ( 2012)
  17. ↑ according to Scopus database : Gerhard Rempe
personal data
SURNAME Rempe, Gerhard
BRIEF DESCRIPTION German physicist and university professor
DATE OF BIRTH April 22, 1956
PLACE OF BIRTH Bottrop