Special Talk
Single photon interference experiments providing new insights into wave-particle relationship
Presented by Prof. Ralf Menzel, University of Potsdam, Germany
Detailed investigations of single photon interferences of separated emitters allow for analyzing the role of the mode function in quantum optics.
Using two crystals for spontaneous parametric down conversion (SPDC) in a cascaded arrangement coherence can be realized across both single photon emitting crystals including an induced coherence channel. Using a three crystal setup "which-path" information of the interfering photons becomes available. It turns out that complementarity is realized via the quantum behavior of the modes.
In another approach coherent higher order modes were used for SPDC. Using e.g. single-signal-photons in a TEM01-like mode provided interference fringes behind a Young's double slit with high fringe visibility while the "which-slit" information seemed to be available from measuring the correlated idler photons in coincidence, simultaneously.
3:00 pm, Monday, March 10, 2014
PAIS-2540, PAIS
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