Domain engineering algorithm for practical and effective photon sources

J. L. Tambasco; A. Boes; L. G. Helt; M. J. Steel; A. Mitchell

doi:10.1364/OE.24.019616

Domain engineering algorithm for practical and effective photon sources

J. L. Tambasco, A. Boes, L. G. Helt, M. J. Steel, A. Mitchell

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	19616-19626
Number of pages	11
Journal	Optics Express
Volume	24
Issue number	17
DOIs	https://doi.org/10.1364/OE.24.019616
Publication status	Published - 22 Aug 2016

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Domain engineering algorithm for practical and effective photon sources

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