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Physics & Astronomy Seminars at Univ. Louisville, Autumn 2008

29 Aug 08 - Balaji Panchapakesan, UL Mech Engineering,
"Understanding the interactions of light on carbon nanotubes: 
Micro-Opto-Mechanical System to Cancer Nanotechnology" (host Sumanasekera)

05 Sep 08 - Dept. Jamboree, each faculty member/post-doc talks for 2-3 minutes
as introduction to research for newcomers
Tim Dowling, John Morrison, Gerry Williger, Jim Lauroesch, Siaoping Tang, 
Gamini Sumanasekera

12 Sep 08 - Dr Ng, UL Radiology, "Medical Physics: Why do you care????

19 Sep 08 - caution, Ryder Cup, no hotel rooms available!
19 Sep 08 - Joe Meiering, UL, "Chemical Abundances in Low Redshift
Quasar Absorption Line Systems" [this seminar can be moved to another date]

26 Sep 2008, Ralf-Juergen Dettmar (host Haberzettl)
"Gaseous Halos of Spiral Galaxies and the Interstellar Disk-Halo Connection"
Multi-wavelength studies of edge-on disk galaxies show the presence of
the various phases of the interstellar medium (ISM) in galactic halos.
This includes the ionized gas, the hot medium, as well as the cosmic ray
component coupled to the large scale magnetic field.
The properties of these ISM components in halos are discussed in the
framework of the disk-halo interaction, the large scale circulation of
matter in a supernova driven ISM.

03 Oct 08 - Mel Ulmer, Northwestern (tentative, host Lauroesch)

10 Oct 2008 - open

17 Oct 08 - Roberto Panepucci, Florida International (host Mendes?)

24 Oct 2008, Sergio Ulloa, Ohio U (host Yu),
"Quantum Optics with Quantum Dots: Coherent exciton and spin dynamics"
Coherent manipulation of quantum states for quantum computation and information
processing is receiving a great deal of attention these days in different
physical systems.  Among those, semiconductor quantum dots are among the most
versatile structures in which to explore physical problems associated with
different aspects of information processing.  Quantum dots are nearly ideal to
implement quantum system control and study their behavior under external probes
and dephasing environments.  In this talk I will discuss how to monitor
coherent excitonic oscillations in single self-assembled quantum dots, how to
monitor their quantum state via photocurrent measurements, and how we
understand the different dephasing mechanisms present in these systems.  We
further explore the production of spin-polarized carriers by resonantly
exciting states in the quantum dots with appropriate optical polarization. We
find that it is possible to achieve significant polarization even in random
distributions of dots in self-assembled arrays.   If time allows, I will also
present the Aharonov-Bohm effect analogue in neutral but polarized excitons
that exist in quantum ring structures, and how an applied magnetic field can be
used to manipulate the luminescence of the ground state of pairs of coupled
rings.
REFS: Phys. Rev. B 75, 155334 (2007), Phys. Rev. Lett. 94, 057404 (2005), Phys.
Rev. B 72, 125327 (2005), and Phys. Rev. B 76, 155306 (2007)

31 Oct 08 - open

07 Nov 08 - Dr Iyengar, Indiana U Chem/Phys possible date (host Yu)

14 Nov 08 - Dr Ye, Purdue EE & Computer Engineering (host Yu)

sometime after mid-November: Dr. James Lewis, WVU (host Ming Yu)

21 Nov 08 - Vincent Meunier, Oak Ridge Nat'l Lab (host Jayanthi)

05  Dec 08 - James Lewis, West Virginia (host Yu)

other interesting seminars
6.) Optical Imaging lunch seminar
Brad Taylor, PhD, from Caliper Life Sciences, will update us on "In Vivo
Biophotonic Imaging: Discovery at the Speed of Light," Tuesday, Jan. 29, 11:45
a.m-1 p.m. in room B-038, Baxter II. Applications with optical imaging are on a
rapid steady rise, please come to feel the excitement. Panera Bread box lunch
will be served; first come, first served. (Submitted By: Chin Ng, Radiology)


POSTPONED
21 Mar 08 Nandini Trivedi, Ohio State (host Jayanthi), Bose-Einstein Condensation, 
Superconductivity, Quantum-Hall Effect

29 Aug 08 - Jacek Jasinski, UL Electron Microscopy Facility, x6338
Electron Microscopy of Nanostructures (host Sumanasekera)

till Spring 2009:
Caty Pilachowski, Indiana U

FUTURE SPEAKER:
16 Apr 2009, Frank Wilczek, Andrew Chamblin Mem. Lecture
after Feb 2009: contact Anna Frebel, will be at CfA

seminar contact at UK: Moshe Elitzur