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Dr. Martina Hentschel

Head of the Mesoscopic Systems Group /
Emmy Noether Group "Many-body effects in mesoscopic systems"

Office: 1B08
(+49) (0351) 871 1208
(+49) (0351) 871 1999
MPIPKS Dresden    
Nöthnitzer Str. 38
D-01187 Dresden

Brief CV ( full CV and List of Publications )
1990-1997: Studies of Physics at Imperial College, London (UK) and the Technical University of Dresden (Germany), Diploma in 1997
1998-2001: PhD student at MPIPKS Dresden (supervisors: Klaus Richter, Peter Fulde), PhD in 2001
2002-2004: Postdoc at Duke University, Durham (North Carolina, USA) in Harold Baranger's group
2004-2006: Scientific Assistent at the University of Regensburg in Milena Grifoni's group
Oct-Dec 2005: Invited Researcher at ATR (Kyoto, Japan) in Takahisa Harayama's group
since 2006: Head of the Mesoscopic Systems Group (Emmy-Noether group) at MPIPKS Dresden
Apr 2009 - Mar 2010: Parental leave after birth of 1st child
Sep 2010 - Aug 2011: Parental leave after birth of 2nd child
Nov 2010: awarded Hertha Sponer prize of the German Physical Society for 2011 (more about the German physicist Hertha Sponer; and in English from a website at Duke University, Durham, NC, USA where Hertha Sponer was professor 1936 - 1965)

Research Interests are given below.

Latest News
Oct. 2011: I am back to office! Friederike is now 2.5 years old, Wiebke is 1 year and, since last week, enjoys the daytime with the Tagesmutter.

Upcoming Events

International Workshop on Microcavities and their Application (WOMA 2011)

See here the WOMA 2009 program

May 24-27, 2011, Busan, Korea
K. An, C.M. Kim, S.W. Kim, M. Hentschel, H.-J. Stöckmann

Wave chaos from the micro- to the macroscale

October 22-26, 2012, MPIPKS Dresden, Germany
M. Hentschel, S. Shinohara. S. Tomsovic, J. Wiersig

Previous Events

3rd Asian-German Workshop on Optical Microcavities:

Quantum Chaos in Open Systems meets Optical Resonators

May 17-21, 2010, MPIPKS Dresden
Susumu Shinohara, Jung-Wan Ryu, and Martina Hentschel (MPIPKS, Germany)

Registration deadline: April 17, 2010

International Summer School

Mesoscopic Physics in Complex Systems

July 12-17, 2010, Cargese, Corsica
Bart van Tiggelen and Sergey Skipetrov (LPMMC UJF/ CNRS Grenoble), Hans-Jürgen Stöckmann and Ulle Kuhl (Marburg), Martina Hentschel (MPIPKS Dresden)

International Conference and Seminar

New Frontiers of Quantum Chaos in Mesoscopic systems

May 19-30, 2008, MPIPKS Dresden
Martina Hentschel (MPIPKS, Germany)
Mark G. Raizen (University of Texas, USA)
Jan Wiersig (Bremen, Germany)

Asian-German Miniworkshop

Optical Microcavities: From rays to waves. From passive to active.

July 6 - 13, 2007, MPIPKS Dresden
Martina Hentschel (MPIPKS, Germany)

Research Interests

For the broader audience:
My research is on electronic and optical mesoscopic systems, i.e. on systems in between (meso) the macroscopic (classical) and microscopic (quantum mechanical) world. Their size is, as a characteristics, smaller than the decoherence length such that interference matters: Self-interference in ballistic systems makes the wavefunctions to be sensistive to the geometry of the system and very different from those of bulk samples. Interference plays also a crucial role in transport - weak localization and the Aharonov-Bohm effect a paradigms for this.
Our research has strong links to the fields of condensed matter physics and classical nonlinear dynamics. We are interested, as a first topic and in a number of projects, in many-body effects in mesoscopic systems for electrons, namely how the signatures of the Kondo effect and Fermi edge singularities differ from the bulk results, and how do they depend on the geometry of the system. This last question concerns problems addressed in the field of quantum chaos - the quantum mechanical properties of classically chaotic (as well as integrable and mixed) systems. We investigate these issues also in a second topic that concerns optical microcavities, i.e. mesoscopic systems for light. The light is, unlike the electrons, not confined by hard walls, but rather by total internal reflection. Because of the possibility of refractive escape, those systems are intrinsically open. We are interested in how this openness affects the dynamics of the system in the ray and wave picture and find that there are considerable deviations. As an example, the reflection of light at curved interfaces in situations when the wavelength becomes comparable to the radius of curvature does not follow the usual specular reflection law. This has drastic effects for the ray-wave (classical-quantum) correspondence in those systems.

More specifically:
Projects presently under investigation
-- Many-body effects in mesoscopic systems: Anderson orthogonality catastrophe, the x-ray edge problem and Fermi-edge singularities in chaotic and regular systems and in graphene, interplay with Kondo physics, signatures of many-body effects in the photoabsorption cross section and transport quantities, Bose-Einstein condensates subject to a sudden perturbation
-- Kondo box problem: Mean-field approximation, chances and limitations
-- Graphene: Parity anomaly, Berry phases, specific signatures of Fermi-edge singularities
-- Quantum chaos and semiclassics in optical microcavities: Goos-Hänchen effect and corrections to ray optics at curved dielectric interfaces, generalisation of the concept of Husimi functions to open systems, S-matrix method for optical systems, ray-wave correspondence
-- Microlasers with directed emission and far-field characteristics of optical microcavities: Directed emission from cavities with Limacon and spiral shape, Ray picture vs. wave simulations vs. experimental results, agreement and deviations between ray and wave picture
-- Nonlinear optical transport: Similarities and differences between Kerr media and Bose Einstein condensates

Mesoscopic Systems Group
In April 2006, I joined the MPIPKS Dresden as leader of the Mesoscopic Physics Group that, as this time, still had to be established. Presently, we are seven group members (two PhD students, four Postdocs, and myself). The group is built around the Emmy Noether Group ``Many-body effects in mesoscopic systems'' that is funded through the Emmy Noether Programme of the German Research Foundation (DFG) from 2006-2011. Another source of external funding is the Research Initiative (Forschergruppe) "Scattering Systems with Complex Dynamics" that is also funded by the German Research Foundation (DFG) from 2007-2010. The research interests of the group range from many-body effects in the mesocopic regime via questions of quantum chaos to optical microresonators. More information available following the links on top and below.

Seminars and Research
Information on the Group Seminar series as well as on group members and research topics can be found via the Mesoscopic Systems Group home page .

CV       Publications      Mesoscopic Systems home      Personal links
Emmy Noether Programme and DFG   (-English)