Düsseldorf 2007 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 2: Quanteninformation (Photonen und nichtklassisches Licht I)

Q 2.6: Vortrag

Montag, 19. März 2007, 11:45–12:00, 5L

Quantum Imaging with Incoherent Photons — •Christoph Thiel¹, Enrique Solano², Thierry Bastin³, John Martin³, Joachim von Zanthier¹, and Girish S. Agarwal⁴ — ¹Institut für Optik, Information und Photonik, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany — ²Physics department, ASC, and CeNS, Ludwig-Maximilians-Universität, Munich, Germany — ³Institut de Physique Nucléaire, Atomique et de Spectroscopie, Université de Liège au Sart Tilman, Liège, Belgium — ⁴Department of Physics, Oklahoma State University, Stillwater, OK, USA

We propose a technique to obtain sub-wavelength resolution with 100% visibility using incoherent light. The method employs N photons spontaneously emitted from N atoms and subsequently detected by N detectors. We demonstrate that for certain detector positions r₂,…,r_N the N-th order correlation function as a function of r₁ takes the form 1+cosNδ(r₁), resulting in a spatial modulation with a fringe spacing λ/N and a contrast of 100%.

The result corresponds to an N-fold increase in resolution compared to the classical interference pattern, obtained in, e.g., Young’s double slit experiment. In our method the photons are created by spontaneous emission. The interference signal with a resolution of λ/N and 100% contrast is thus generated by incoherent light.