Sub-Rayleigh Imaging via N-Photon Detection

Details Sub-Rayleigh Imaging via N-Photon Detection Sub-Rayleigh Imaging via N-Photon Detection

2010-07-06

arxiv.org/abs/1007.0973v1

Physics

Quantum Physics

Scientific paper

The Rayleigh diffraction bound sets the minimum separation for two point objects to be distinguishable in a conventional imaging system. We demonstrate resolution enhancement beyond the Rayleigh bound using random scanning of a highly-focused beam and N-photon photodetection implemented with a single-photon avalanche detector array. Experimental results show resolution improvement by a factor ~sqrt(N) beyond the Rayleigh bound, in good agreement with theory.

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