Castelletto, S.
, Degiovanni, I.
, Schettini, V.
and Migdall, A.
(2005),
Spatial and Spectral Mode Selection of Heralded Single Photons From Pulsed Parametric Down Conversion, Optics Express, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=840964
(Accessed April 23, 2024)
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Spatial and Spectral Mode Selection of Heralded Single Photons From Pulsed Parametric Down Conversion
Published
Author(s)
Stefania Castelletto, Ivo P. Degiovanni, V Schettini,
Abstract
We describe an experiment in which photon pairs from a pulsed parametric down-conversion source were coupled into single-mode fibers with heralding efficiencies as high as 70%. Heralding efficiency or mode preparation efficiency is defined as the probability of finding a photon in a fiber in a definite state, given the detection of its twin. Heralding efficiencies were obtained for a range of down-conversion beam size configurations. Analysis of spatial and spectral mode selection, and their mutual correlation, guides one toward a practical procedure for engineering PDC single photons in a definite mode and spectral emission. The heralded photons were analyzed spectrally, for each beam configuration, to determine the interplay between transverse momentum and spectral entanglement on the preparation efficiency.Citation
Optics Express
Volume
13 No 18
Pub Type
Journals
Download Paper
Keywords
coupling efficiency, downconversion, fiber coupling, mode matching PDC, single mode, single-photon source
Citation
Created August 31, 2005, Updated October 12, 2021