Dresden 2011 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 6: Quantum Effects: Light Scattering and Propagation
Q 6.8: Talk
Monday, March 14, 2011, 12:30–12:45, SCH A01
Single-Slit Focusing and its Representations — •Emerson Sadurni1, William Case2, and Wolfgang Schleich1 — 1Institut fuer Quantenphysik, Ulm Universitaet, Albert-Einstein Allee 11 89081 Ulm - Germany — 2Department of Physics, Grinnell College, P.O. Box 805, Grinnell, Iowa 50112
We have found that under free Schroedinger propagation a real-valued square wave packet shrinks rather than expands for very short times. The amplitude is enhanced by an approximate factor of 1.8. This is also the case when a two dimensional electromagnetic wave of constant phase hits a single slit and focuses around the optical axis in the near-field region. We give several descriptions of the problem, covering its many aspects from different (but equivalent) points of view: Wigner functions, fractality, suitable focusing measures et cetera.