Extended phase-matching properties of periodically poled Potassium Niobate crystals for mid-infrared polarization-entangled photon-pair generation
SCIE
SCOPUS
- Title
- Extended phase-matching properties of periodically poled Potassium Niobate crystals for mid-infrared polarization-entangled photon-pair generation
- Authors
- Lee, Kwang Jo; Lee, Sunmi; Shin, Heedeuk
- Date Issued
- 2016-12
- Publisher
- Optical Society of America
- Abstract
- We report the extended phase-matching (EPM) properties of two kinds of periodically poled potassium niobate (KNbO3 or KN) crystals (i.e., periodic 180 degrees- and 90 degrees-domain structures) that are highly useful for the generation of polarization-entangled photon pairs in the mid-infrared (IR) spectral region. Under the degenerate Type II spontaneous parametric downconversion process satisfying the EPM condition, an input single photon with a frequency of 2 omega generates a pair of synchronized photons with identical frequencies of omega that are orthogonally polarized with respect to each other (i.e., the frequency-coincident, polarization-entangled biphoton states). Our simulation results illustrate that the EPM is achievable in the mid-IR spectral region: at the wavelengths of 3.80 mu m and 4.03 mu m for periodic 90 degrees -and 180 degrees-domain structures, respectively. We will describe in detail the EPM properties of both cases in terms of interaction types and the corresponding nonlinear optic coefficients, phase-matching bandwidths, and domain poling periods. The calculated EPM bandwidths are much broader than 200 nm in the mid-IR for both cases, exhibiting a great potential for nonlinear-optic signal processing in quantum communication systems operating in the mid-IR bands. (C) 2016 Optical Society of America
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/101078
- DOI
- 10.1364/AO.55.009791
- ISSN
- 1559-128X
- Article Type
- Article
- Citation
- Applied Optics, vol. 55, no. 34, page. 9791, 2016-12
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