Results 61 to 70 of about 99,918 (270)
Topology Optimization Enables Freeform Matrix Fourier Optics
Advanced Optical Materials, EarlyView.A topology‐optimized freeform metasurface is designed and fabricated to realize matrix Fourier optics, enabling the diffraction of multiple polarization states into distinct far‐field orders. By combining forward design with gradient‐based inverse optimization, high polarization contrast of up to 98.7% is achieved.
Yu‐Tzu Liu +5 more
wiley +1 more source
Journal of High Energy Physics, 2004 The holographic interpretation is a useful tool to describe 5D field theories in a 4D language. In particular it allows one to relate 5D AdS theories with 4D CFTs. We elaborate on the 5D/4D dictionary for the case of fermions in AdS$_5$ with boundaries.
CONTINO, ROBERTO, Pomarol, Alex
openaire +5 more sources
Holography of information in AdS/CFT
Journal of High Energy Physics, 2022 The principle of the holography of information states that in a theory of quantum gravity a copy of all the information available on a Cauchy slice is also available near the boundary of the Cauchy slice.
Robert de Mello Koch, Garreth Kemp
doaj +1 more source
Comments on Holographic Entanglement Entropy in TT Deformed CFTs
, 2019 The Ryu-Takayanagi (RT) formula has been a key ingredient in our understanding of holography. Recent work on TT deformations has also boosted our understanding of holography away from the conformal boundary of AdS.
Murdia, Chitraang +3 more
core +1 more source
Switchable Terahertz Beam Steering with Near‐Perfect Ordinary Transmission
Advanced Photonics Research, EarlyView.This study introduces a reconfigurable metasurface that enables switchable terahertz beam steering upon actuation by a global temperature change. At room temperature, it achieves a true “OFF” state with nearly 100% transmission, behaving as if the metasurface is not present, thereby not distorting incoming light.
Zhixiang Huang +11 more
wiley +1 more source
Special Issue on Digital Holographic 3D Imaging: Capture, Display, and Evaluation
ETRI Journal, 2019 Holography has been fascinating people for almost 70 years (since Gabor's invention in 1947) as a true three‐dimensional (3D) imaging technology that can replicate 3D scenes in free space.
Małgorzata Kujawińska +3 more
doaj +1 more source
Holostereosynthesis: An Improvement to Louis Lumière’s Photostereosynthesis Technique
Applied Sciences, 2022 In 1920, Louis Lumière, one of the fathers of Cinématograph, invented photostereosynthesis, a photography technique that could recreate three-dimensional images without a specific artifice.
Philippe Gentet +2 more
doaj +1 more source
Testing Holographic Principle from Logarithmic and Higher Order Corrections to Black Hole Entropy
, 2004 The holographic principle is tested by examining the logarithmic and higher order corrections to the Bekenstein-Hawking entropy of black holes. For the BTZ black hole, I find some disagreement in the principle for a holography screen at spatial infinity ...
't Hooft +59 more
core +1 more source
Incoherent Digital Holography Empowered by Wavefront and Information Engineering: A Review
Advanced Photonics Research, EarlyView.Advancements in incoherent digital holography (IDH) have been achieved via wavefront engineering (using spatial light modulators, diffractive optics, and metasurfaces) and information engineering (using compressive sensing and deep learning). This paper presents an overview of IDH with wavefront and information engineering, paving the way toward its ...
Teruyoshi Nobukawa
wiley +1 more source