Simulating Single-Photon Sources Based on Backward-Wave Spontaneous Parametric Down-Conversion in a Periodically Poled KTP Waveguide

A.A. Shukhin; I.Z. Latypov; A.V. Shkalikov; A.A. Kalachev

doi:10.1051/epjconf/201510310009

EPJ

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Proceedings

Open Access

EPJ Web of Conferences 103, 10009 (2015)
https://doi.org/10.1051/epjconf/201510310009

Simulating Single-Photon Sources Based on Backward-Wave Spontaneous Parametric Down-Conversion in a Periodically Poled KTP Waveguide

A.A. Shukhin, I.Z. Latypov^a, A.V. Shkalikov and A.A. Kalachev

Zavoisky Physical-Technical Institute, 10/7, Sibirsky tract str., 420029, Kazan Russia

^a Corresponding author: ilnur.latypov@gmail.comu

Published online: 25 September 2015

Abstract

The properties of the backward-wave spontaneous parametric down-conversion (SPDC) in a periodically poled potassium titanyl phosphate (KTP) waveguide are studied in the context of creating narrowband heralded sources of single-photon states. The effective index of refraction and spatial profile of different waveguide modes, efficiency of different SPDC processes and purity of heralded photons are calculated numerically for a given waveguide. Compared to the usual co-propagating SPDC, spectral narrowing of the backward-wave SPDC was observed as should be expected. Generation biphoton states in backward-wave regime is experimentally observed in two-photon detection scheme.

Key words: single-photon source / SPDC / PPKTP

© Owned by the authors, published by EDP Sciences, 2015

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