%0 Journal Article
%T Submicron axial resolution in an ultrabroadband two-photon interferometer using superconducting single-photon detectors
%A Nasr, M. B.
%A Minaeva, O.
%A Goltsman, G. N.
%A Sergienko, A. V.
%A Saleh, B. E.
%A Teich, M. C.
%J Opt. Express
%D 2008
%V 16
%N 19
%@ 1094-4087
%G English
%F Nasr_etal2008
%O PMID:18795048
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=1408), last updated on Fri, 14 May 2021 23:46:44 -0500
%X We generate ultrabroadband biphotons via the process of spontaneous parametric down-conversion in a quasi-phase-matched nonlinear grating that has a linearly chirped poling period. Using these biphotons in conjunction with superconducting single-photon detectors (SSPDs), we measure the narrowest Hong-Ou-Mandel dip to date in a two-photon interferometer, having a full width at half maximum (FWHM) of approximately 5.7 fsec. This FWHM corresponds to a quantum optical coherence tomography (QOCT) axial resolution of 0.85 µm. Our results indicate that a high flux of nonoverlapping biphotons may be generated, as required in many applications of nonclassical light.
%K SSPD
%K SNSPD
%R 10.1364/oe.16.015104
%U http://www.ncbi.nlm.nih.gov/pubmed/18795048
%U https://doi.org/10.1364/oe.16.015104
%P 15104-15108