Results 111 to 120 of about 68,202 (308)
International Journal of Modern Physics D, 2003 An elementary introduction to Maldacena's AdS/CFT correspondence is given, with some emphasis in the Fefferman–Graham construction. This is based on lectures given by one of us (E.A.) at the Universidad Autonoma de Madrid.
Enrique Alvarez +2 more
openaire +3 more sources
Advanced Photonics Research, EarlyView.This work introduces a low‐loss diffractive neural network, fabricated using an imprinting technique with parowax material, for recognizing and manipulating the topological charge of orbital angular momentum (OAM) waves. It is also demonstrated that the low‐loss diffractive network can perform mathematical operations based on the topological charges of
Wei Jia +4 more
wiley +1 more source
Synthesis of nano-optical elements for zero-order diffraction 3D imaging
Scientific Reports, 2022 A method is proposed to compute and synthesize a microrelief to produce a new nano-optical element for forming 3D images with full parallax at the zero order of diffraction. The synthesis of nano-optical elements requires the use of multilevel structures.
Alexander Goncharsky +3 more
doaj +1 more source
Deep learning in holography and coherent imaging
Light: Science & Applications, 2019 Recent advances in deep learning have given rise to a new paradigm of holographic image reconstruction and phase recovery techniques with real-time performance.
Y. Rivenson, Yichen Wu, A. Ozcan
semanticscholar +1 more source
Trichromatic and Tri-polarization-channel Holography with Non-interleaved Dielectric Metasurface. [PDF]
Nano letters (Print), 2019 Metasurfaces hold great potentials for advanced holographic display with extraordinary information capacity and pixel sizes in an ultrathin flat profile.
Yueqiang Hu +12 more
semanticscholar +1 more source
Extraction of Inherent Amplitude Mode from a Light Beam
Advanced Photonics Research, EarlyView.Mode extraction is the inverse process of the double‐beam superposition principle in classical optics. While polarization mode extraction has been successfully demonstrated using an m‐order vector vortex beam, this article demonstrates the amplitude mode extraction of a light beam.
Zhiyang Xia +6 more
wiley +1 more source
Moyal Quantization, Holography, and the Quantum Geometry of Surfaces [PDF]
, 1998 An elementary introduction is provided to the phase space quantization method of Moyal and Wigner. We generalize the method so that it applies to 2-dimensional surfaces, where it has an interesting connection with quantum holography. In the case of Riemann surfaces the connection between Moyal quantization and holography provides new insights into the ...
arxiv +1 more source
Advanced Photonics Research, EarlyView.Photonic resonances within a dielectric metasurface are investigated using photoelectron emission microscopy (PEEM) and finite‐difference time‐domain simulations. An electron inelastic mean free path of 35 ± 10 nm is extracted from comparisons between microscopy and simulations.
Andrew R. Kim +9 more
wiley +1 more source
Journal of High Energy PhysicsAbstract We consider the collective field theory description of the singlet sector of a free and massless matrix field in d dimensions. The k-local collective fields are functions of (d − 1)k + 1 coordinates. We provide a map between the collective fields and fields in the dual gravitational theory defined on AdSd+1 spacetime.
Robert de Mello Koch +1 more
openaire +3 more sources
Classical and Quantum Gravity, 2016 In this article we review recent progress on the holographic modelling of field theories with Lifshitz symmetry. We focus in particular on the holographic dictionary for Lifshitz backgrounds - the relationship between bulk fields and boundary operators, operator correlation functions and underlying geometrical structure.
openaire +4 more sources