Imaging of Spatial Correlations of Two-Photon States

Abstract

We use a fiber based double slit Young interferometer for studying the far-field spatial distribution of the two-photon coincidence rate (coincidence pattern) for various quantum states with different degree of spatial entanglement. The realized experimental approach allows to characterize coincidence patterns for different states without any modifications of the setup. Measurements were carried out with path-entangled and separable states. The dependence of the coincidence pattern on the phase of the interferometer for superposition and separable states was studied. The results have implications for using of nonclassical light in multiphoton imaging, quantum lithography, and studies of phase decoherence.

9 pages, 7 figures; accepted by Phys Rev A

References in corpus (10)

• Spatial correlations in parametric down-conversion
• Quantum Metrology for Gravitational Wave Astronomy
• Quantum Imaging beyond the Diffraction Limit by Optical Centroid Measurements
• Experimental demonstration of entanglement-enhanced classical communication over a quantum channel with correlated noise
• Quantum spatial superresolution by optical centroid measurements
• On the Relationship between Resolution Enhancement and Multiphoton Absorption Rate in Quantum Lithography
• Sub-Rayleigh Quantum Imaging
• Control of quantum transverse correlations on a four-photon system
• Fundamental Quantum Limit to Multiphoton Absorption Rate for Monochromatic Light
• On the efficiency of quantum lithography

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