Title :
Diffraction and interference of entangled photon pairs generated by parametric down-conversion: a spatial correlation effect
Author :
Shimizu, Ryosuke ; Edamatsu, Keiichi ; Itoh, Tadashi
Author_Institution :
Div. of Mater. Phys., Osaka Univ., Toyonaka, Japan
Abstract :
Diffraction-interference patterns of parametric down-converted photons through a transmission grating by both one- and two-photon detection schemes are presented. The measured patterns are explained by the Fourier analysis of the two-photon wave packet, considering the quantum spatial correlation between the constituent photons. Spatial diffraction-interference patterns were recorded by a two-photon detector consisting of two avalanche photodiodes. For comparison, diffraction-interference patterns of Ti:sapphire laser are also observed using the same apparatus (a uncorrelated case).
Keywords :
Fourier analysis; avalanche photodiodes; diffraction gratings; light diffraction; light interference; optical correlation; optical frequency conversion; photodetectors; quantum entanglement; quantum optics; solid lasers; titanium; two-photon processes; Al2O3:Ti; Fourier analysis; Ti:sapphire laser; avalanche photodiodes; diffraction-interference patterns; entangled photon pairs; one-photon detection; parametric down-conversion; quantum spatial correlation; spatial correlation effect; transmission grating; two-photon detection; two-photon wave packet; Diffraction gratings; Frequency; High-resolution imaging; Interference; Laser excitation; Laser modes; Optical harmonic generation; Pattern analysis; Photonic crystals; Quantum entanglement;
Conference_Titel :
Quantum Electronics Conference, 2003. EQEC '03. European
Print_ISBN :
0-7803-7733-8
DOI :
10.1109/EQEC.2003.1314198
