|
|
| Home | People | Seminars | Research | Openings |
Welcome to the Mesoscopic Systems Group |
| Seminars |
|
Mesoscopic Systems Seminar |
| Our Group |
|
The core of the Mesoscopic Systems Group at the
MPIPKS Dresden is the
Emmy-Noether Group "Many-body effects in mesoscopic systems",
a group of young researchers lead by Dr.
Martina Hentschel
that is funded within the
Emmy-Noether Program of the
German Research Foundation
(
Deutsche Forschungsgemeinschaft, DFG ).
Apart from this, visitors and postdocs of the MPIPKS associate with
the Mesoscopic Systems Group. We started to work at the institute
in April 2006 and continue the tradition of the MPIPKS
Mesoscopic Physics Groups of
Prof. Dr. Klaus Richter
(now Univ. of Regensburg)
and
Dr. Henning Schomerus
(now Lancaster University). |
|
From left: Sebastien Burdin, Tae-Yoon Kwon, Georg Röder, Rainer Bedrich, Jeong-Bo Shim, Eduardo Mucciolo, Swarnali Bandopadhyay, Martina Hentschel (picture taken June 6, 2007) |
| What we do |
|
The objective of our work is, in the broad context,
to investigate and understand how the properties of
systems change when the system is made smaller and smaller.
How do the optical properties of a piece of metal change when
its size is reduced to (below) few micrometers and it becomes a
so-called metallic nanoparticle?
What happens if we confine light by virtue of total internal reflection
into a small glass disk that is just somewhat larger than the light's
wavelength, and does it matter when we deform the disk?
Small means here that the systems are so tiny that electrons
or photons can interfere with themselves and have to be described
as waves. This happens typically on the scale of few micrometers: in
the so-called mesoscopic regime. It lies in between the macroscopic,
classical world we experience in (most of) our everyday life and the
microscopic, quantum world of atoms and molecules.
Not surprisingly, often so-called semiclassical concepts are used -
classical views complemented by the crucial property of interference. More specifically, our current interests include Fermi edge singularities in x-ray photoabsoprtion spectra of mesoscopic systems that we predict to be strikingly different from the metallic, macroscopic case. Another subject are signatures of a mixed, rather than a chaotic or regular, phase space in transport properties of, e.g., quantum dots. We use concepts and methods from both the fields of condensed matter theory and qantum chaos. Our research on optical microresonators and microlasers generalizes ideas developed for quantum chaotic systems with hard walls to open, optical systems where total internal reflection provides the light confinement. Whenever possible, we work in close relation with experiment. More information on present research projects can be found on the individual home pages of the group members. |
| Previous events |
International Conference
Optical Microcavities: Quantum Chaos in Open Systems Meets Optical Resonators |
International Conference and Seminar
New Frontiers of Quantum Chaos in Mesoscopic systems May 19-30, 2008, MPIPKS Dresden Organisers: Martina Hentschel (MPIPKS, Germany) Mark G. Raizen (University of Texas, USA) Jan Wiersig (Bremen, Germany) |
Group Outing: Cross-Country Skiing in Altenberg, January 2008Sorry for the snowstorm, really! Here are the pictures. |
Asian-German MiniworkshopOptical Microcavities: From rays to waves. From passive to active.July 6 - 13, 2007, MPIPKS Dresden Organiser: Martina Hentschel (MPIPKS, Germany) |
mh-10/10