Theoretical investigation of moire patterns in quantum images
TLDR
In this article, it was shown that moire fringes can also arise in the spatial distribution of the coincidence count rate of twin photons from the parametric down-conversion, when spatial structures with different frequencies are placed in the path of each one of the twin beams.Abstract:
Moire patterns are produced when two periodic structures with different spatial frequencies are superposed. The transmission of the resulting structure gives rise to spatial beatings which are called moire fringes. In classical optics, the interest in moire fringes comes from the fact that the spatial beating given by the frequency difference gives information about details (high spatial frequency) of a given spatial structure. We show that moire fringes can also arise in the spatial distribution of the coincidence count rate of twin photons from the parametric down-conversion, when spatial structures with different frequencies are placed in the path of each one of the twin beams. In other words, we demonstrate how moire fringes can arise from quantum images.read more
Citations
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Journal ArticleDOI
Effects of crystal length on the angular spectrum of spontaneous parametric downconversion photon pairs
TL;DR: In this paper, a theoretical and experimental analysis of the joint effects of the transverse electric field distribution and of the nonlinear crystal characteristics on the properties of photon pairs generated by spontaneous parametric downconversion (SPDC) is presented.
Journal ArticleDOI
Effects of crystal length on the angular spectrum of spontaneous parametric downconversion photon pairs
TL;DR: In this article, a theoretical and experimental analysis of the joint effects of the transverse electric field distribution and of the nonlinear crystal characteristics on the properties of photon pairs generated by spontaneous parametric downconversion (SPDC) is presented.
Journal ArticleDOI
Formulation of the moiré patterns formed by superimposing of gratings consisting topological defects: moiré technique as a tool in singular optics detections
TL;DR: In this paper, the authors introduced a new family of ZPs containing topological defects that they named defected ZPs (DZP) and presented a very simple, uniform, and comprehensive formulation for the moire pattern of superimposition of two LFGs, two DZPs, and superimposing of an LFG on a DZP, using the reciprocal vector approach.
DissertationDOI
Emaranhamento multicolor entre feixes intensos de luz
TL;DR: In this paper, the authors investigated the quantum properties of the light beams produced by an optical parametric oscillator (OPO) above threshold, both experimentally and theoretically, and presented the first measurement of entanglement between the bright twin beams, signal and idler.
Journal ArticleDOI
Moiré effects via second-order correlated thermal light
Jie Zhang,Le-Man Kuang +1 more
TL;DR: In this paper, the authors proposed a theoretical scheme to produce Moire effects via classically correlated thermal light and derived Gaussian thin lens equations and plot the imaging process of Moire patterns by graphics of ray optics.
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