Department of Physics

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Physics Colloquium for February 21

Feb 14, 2014

Speaker: Dr. Kishor Kapale
Date: Friday, February 21, 2014
Time: 4 PM
Room: 205 Currens Hall

The Physics of Super Resolution: from atom localization to microscopy


The Rayleigh diffraction limit for resolution is not fundamental as it hinges on the use of a particular optical setup. Several classical optical techniques, such as monitoring the evanescent fields, already allow resolution beyond the diffraction limit, however, only by a small factor. Recently several quantum tricks have emerged to obtain resolution much beyond the diffraction limit. Employing spatially dependent light-matter interaction allows extreme sub-wavelength resolution in determining the position of an atom. The idea of super-resolution has also found applications in the area of microscopy. This talk will concentrate on throwing light on the techniques to go beyond the diffraction limit for variety of application such as sub-nano fabrication, imaging and microscopy. In this context, a natural question arises: Is there an ultimate limit to resolution? This question will be addressed with an eye on the limitations of these super-resolution proposals.

About the speaker:
Dr. Kapale is a theoretical physicist whose research focuses on quantum optics, atomic optics, quantum information theory and applied quantum physics. Dr. Kapale did his MS in Physics from Indian Institute of Technology, Bombay (now Mumbai). He did his PhD work at Texas A&M in the area of theoretical quantum optics. After spending a semester at Princeton he moved to Jet Propulsion Laboratory, California Institute of Technology as a National Research Council Research Associate and NASA Postdoctoral Fellow. He joined the WIU Department of Physics in Fall of 2007.

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