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Optimizing single-photon-source heralding efficiency at 1550 nm using periodically poled lithium niobate

S. Castelletto·I. P. Degiovanni·V. Schettini·A. Migdall
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Abstract

We explore the feasibility of using high conversion-efficiency periodically-poled crystals to produce photon pairs for photon-counting detector calibrations at 1550 nm. The goal is the development of an appropriate parametric down-conversion (PDC) source at telecom wavelengths meeting the requirements of high-efficiency pair production and collection in single spectral and spatial modes (single-mode fibers). We propose a protocol to optimize the photon collection, noise levels and the uncertainty evaluation. This study ties together the results of our efforts to model the single-mode heralding efficiency of a two-photon PDC source and to estimate the heralding uncertainty of such a source.

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S. Castelletto, I. P. Degiovanni, V. Schettini, A. Migdall. 2006-01-12. Optimizing single-photon-source heralding efficiency at 1550 nm using periodically poled lithium niobate. https://doi.org/10.1088/0026-1394/43/2/s12

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