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Q: Fachverband Quantenoptik und Photonik

Q 6: Quantum Effects: Light Scattering and Propagation

Q 6.8: Vortrag

Montag, 14. März 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.