Restoring geometrical optics near caustics using sequenced metaplectic transforms [PDF]
New Journal of Physics, 2020 Geometrical optics (GO) is often used to model wave propagation in weakly inhomogeneous media and quantum-particle motion in the semiclassical limit. However, GO predicts spurious singularities of the wavefield near reflection points and, more generally,
N A Lopez, I Y Dodin
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An Overview of Geometrical Optics Restricted Quantum Key Distribution [PDF]
Entropy, 2021 Quantum key distribution (QKD) assures the theoretical information security from the physical layer by safely distributing true random numbers to the communication parties as secret keys while assuming an omnipotent eavesdropper (Eve).
Ziwen Pan, Ivan B. Djordjevic
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Three dimensional printing of metamaterial embedded geometrical optics (MEGO). [PDF]
Microsyst Nanoeng, 2019 Three-dimensional printers have revolutionized many scientific fields with its low-cost, accessibility and ease of printing. In this paper, we show how stereolithography (SLA) based 3D printers can enable realization of innovative 3D optical devices ...
Sadeqi A +3 more
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Geometrical Optics Restricted Eavesdropping Analysis of Satellite-to-Satellite Secret Key Distillation [PDF]
Entropy, 2021 Traditionally, the study of quantum key distribution (QKD) assumes an omnipotent eavesdropper that is only limited by the laws of physics. However, this is not the case for specific application scenarios such as the QKD over a free-space link.
Ziwen Pan, Ivan B. Djordjevic
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Controlling lightwave in Riemann space by merging geometrical optics with transformation optics. [PDF]
Sci Rep, 2018 In geometrical optical design, we only need to choose a suitable combination of lenses, prims, and mirrors to design an optical path. It is a simple and classic method for engineers.
Liu Y, Sun F, He S.
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Establishment of Imaging Spectroscopy of Nuclear Gamma-Rays based on Geometrical Optics. [PDF]
Sci Rep, 2017 Since the discovery of nuclear gamma-rays, its imaging has been limited to pseudo imaging, such as Compton Camera (CC) and coded mask. Pseudo imaging does not keep physical information (intensity, or brightness in Optics) along a ray, and thus is capable
Tanimori T +18 more
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Electric Transverse Emissivity of Sinusoidal Surfaces Determined by a Differential Method: Comparison with Approximation of Geometric Optics [PDF]
International Journal of Differential Equations, 2021 We present in this paper a numerical study of the validity limit of the optics geometrical approximation in comparison with a differential method which is established according to rigorous formalisms based on the electromagnetic theory.
Taoufik Ghabara
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Modelling red blood cell optical trapping by machine learning improved geometrical optics calculations. [PDF]
Biomed Opt Express, 2023 Tognato R +3 more
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Geometrical-optics approach to increase the accuracy in LED-based photometers for point-of-care testing. [PDF]
Biomed Opt Express, 2019 Marsan M +6 more
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Geometric optics and the “hairy ball theorem”
Results in Physics, 2016 Applications of the hairy ball theorem to the geometrical optics are discussed. When the ideal mirror, topologically equivalent to a sphere, is illuminated at every point, the “hairy ball theorem” prescribes the existence of at least one point at which ...
Edward Bormashenko, Alexander Kazachkov
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