Open AccessDomain engineering algorithm for practical and effective photon sources
Author(s) -
Jean-Luc Tambasco,
Andreas Boes,
LG Helt,
M. J. Steel,
Arnan Mitchell
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.019616
Subject(s) - poling , optics , potassium titanyl phosphate , nonlinear system , photon , algorithm , quasi phase matching , quantum optics , nonlinear optics , lithium niobate , gaussian , computer science , frequency domain , physics , phase (matter) , materials science , optoelectronics , laser , quantum mechanics , dielectric , computer vision , ferroelectricity
We introduce a method for shaping the spectral response of nonlinear light sources by tailoring the quasi-phase matching. Our algorithm relies on engineering the poling to accurately trace a generated target signal field amplitude to determine the desired nonlinearity profile. The proposed poling algorithm results in a poling pattern that is more robust to manufacture, as all domain inversions are of equal width. The poling pattern is verified using a nonlinear beam propagation method simulation. This approach is applied to achieve Gaussian-shaped phase matching along a potassium titanyl phosphate (KTP) crystal in order to generate pure heralded single photons of spectral purity ~0.996-this is highly desirable for heralded single photon quantum optics.