TY  - JOUR
AU  - Nasr, M. B.
AU  - Minaeva, O.
AU  - Goltsman, G. N.
AU  - Sergienko, A. V.
AU  - Saleh, B. E.
AU  - Teich, M. C.
PY  - 2008
DA  - 2008//
TI  - Submicron axial resolution in an ultrabroadband two-photon interferometer using superconducting single-photon detectors
T2  - Opt. Express
JO  - Opt. Express
SP  - 15104
EP  - 15108
VL  - 16
IS  - 19
KW  - SSPD
KW  - SNSPD
AB  - 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.
SN  - 1094-4087
UR  - http://www.ncbi.nlm.nih.gov/pubmed/18795048
UR  - https://doi.org/10.1364/oe.16.015104
DO  - 10.1364/oe.16.015104
LA  - English
N1  - PMID:18795048
ID  - Nasr_etal2008
ER  -