Dr. Stephan Dürr
Stephan Dürr
Group Leader
Phone: +49 89 3 29 05 - 291
Room: A 2.22
Prof. Dr. Thomas Udem
Thomas Udem
Phone: +49 89 3 29 05 - 282 // -257
Room: D 0.21 // D 0.39

next colloquium

  • The colloquium series will resume at the beginning of the next term in April/October.



Our series of Colloquium Talks takes place from October till January and from April till July, on Tuesdays, at 2:30 p.m..

Attention! Due to the recontstruction of the foyer at the MPQ talks will take place at the interims Lecuture Hall in Room B 0.32.

Scientific organization of the talks: Dr. Stephan Dürr and Dr. Thomas Udem

If you wish to view the live stream of the MPQ colloquium, please use the link to subscribe to the corresponding mailing list. Detailed instructions will be sent to all subscribers.


Surface enhanced coherent Raman scattering

Surface enhanced coherent Raman scattering (Prof. Eric Potma)

Surface-enhanced Raman scattering (SERS) is a popular technique that makes it possible to boost the otherwise weak Raman effect to levels that allow single molecule detection. A coherent, nonlinear equivalent of single molecules SERS is highly attractive, because it would allow the use single vibrational quantum oscillators with a narrow line width for a host of interesting applications. The translation of SERS into the domain of coherent Raman spectroscopy (CRS) has, however, not been trivial. This presentation zooms into some of the recent accomplishments in this area, highlights single molecule CRS experiments and discusses the possibilities of performing single vibrational oscillator measurements without the use of nanoscale plasmonic antennae. [more]

Quantum Logic Spectroscopy with Trapped Ions

Quantum Logic Spectroscopy with Trapped Ions (Prof. Dr. Dietrich Leibfried)

Quantum logic spectroscopy uses the quantized motion of trapped charged particles as a means to indirectly control charged quantum systems and gain information on their properties. A highly controllable atomic "logic" ion indirectly helps to manipulate the system under study and to report information back to the experimenter. This allows for precise quantum control of charged systems that are hard or impossible to directly control with light fields, such as atomic ions without convenient laser cooling transitions, molecular ions or charged elementary particles such as the proton. This talk will introduce the basic ideas behind quantum logic spectroscopy and illustrate its power based on example experiments in the NIST Ion Storage Group. [more]

Synthesizing Light: New Tools, Wavelengths and Opportunities

Synthesizing Light: New Tools, Wavelengths and Opportunities (Prof. Dr. Scott Diddams)

Frequency synthesis is ubiquitous in all aspects of our modern technological society, with examples being found in wide ranging applications from computing, communications and navigation systems to sensors and scientific instrumentation. Historically, the generation and precise control of electromagnetic radiation has been confined to the radio frequency and microwave domains. How­ever, optical frequency combs, first introduced by Prof. T.W. Hänsch, dramatically expand the synthesis bandwidth to cover the entire terahertz and optical domains as well. [more]

Topology in finite‐temperature and non‐equilibrium systems

Topology in finite‐temperature and non‐equilibrium systems (Prof. Michael Fleischhauer)

Topological states of matter have fascinated physicists since a long time due to the exotic properties of elementary excitations and the topological protection of edge states and currents. The notion of topology is ususally associated with ground states of (many-body)-Hamiltonians. [more]

Cold and ultracold molecules for quantum information and particle physics

Cold and ultracold molecules for quantum information and particle physics (Prof. John Doyle)

Wide-ranging scientic applications have created growing interest in ultracold molecules. Heteronuclear bialkali molecules, assembled from ultracold atoms, enabled the study of long-range dipolar interactions and quantum-state-controlled chemistry, and recently have been brought to quantum degeneracy. Assembling such molecules one-byone in tweezers for quantum information applications is one exciting avenue of this work. [more]

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