Results 11 to 20 of about 98,753 (267)
Optics Express, 2001 We propose to make use of quantum entanglement for extracting holographic information about a remote 3-D object in a confined space which light enters, but from which it cannot escape.
Abouraddy +11 more
core +4 more sources
Nuclear Physics B, 2001 We show that the Abelian Higgs field equations in the four dimensional anti de Sitter spacetime have a vortex line solution. This solution, which has cylindrical symmetry in AdS$_4$, is a generalization of the flat spacetime Nielsen-Olesen string.
A.M. Ghezelbash +32 more
core +5 more sources
International Journal of Modern Physics D, 2013 It is argued that the role of infinite dimensional asymptotic symmetry groups in gravity theories are essential for a holographic description of gravity and possibly to a resolution of the black hole information paradox.
Arponen, Heikki
core +2 more sources
Design of broadband terahertz vector and vortex beams: I. Review of materials and components
Light: Advanced Manufacturing, 2022 In this paper, we review the existing approaches for vortex and vector beam shaping and generation in the terahertz frequency range. The particular focus of this review is on the possibility of homogeneous topological charge formation in the ultra-wide ...
Nikolay V. Petrov +4 more
doaj +1 more source
Design of broadband terahertz vector and vortex beams: II. Holographic assessment
Light: Advanced Manufacturing, 2022 In this paper, we demonstrate the capabilities of the terahertz pulse time-domain holography in visualisation, simulation, and assessment of broadband THz vortex beam formation dynamics upon its shaping by elements of beam converter, and further ...
Nikolay V. Petrov +4 more
doaj +1 more source
The European Physical Journal C, 2018 We present a new correspondence between a d-dimensional dynamical system and a whole family of (d+1)-dimensional systems. This new scale-holographic relation is built by the explicit introduction of a dimensionful constant which determines the size of the additional dimension.
Ruiz Cembranos, José Alberto +2 more
openaire +5 more sources
Scientific Reports, 2022 The paper presents the results of a comprehensive study on the optimization of independent amplitude and phase wavefront manipulation which is implemented using a binary digital micromirror device. The study aims to investigate the spatial resolution and
Alexandra Georgieva +2 more
doaj +1 more source
Monthly Notices of the Royal Astronomical Society, 2008 The dynamic spectrum of a radio pulsar is an in-line digital hologram of the ionized interstellar medium. It has previously been demonstrated that such holograms permit image reconstruction, in the sense that one can determine an approximation to the complex electric field values as a function of Doppler shift and delay, but to date the quality of the ...
Walker, Mark A. +3 more
openaire +4 more sources
Compression Performance Analysis of Experimental Holographic Data Coding Systems
Sensors, 2023 It is challenging to find a proper way to compress computer-generated holography (CGH) data owing to their huge data requirements and characteristics. This study proposes CGH data coding systems with high-efficiency video coding (HEVC), three-dimensional
Tianyu Dong +3 more
doaj +1 more source
Optics Letters, 1985 A new method for recording holograms using incoherent light is described. The method is based on optical propagation through birefringent crystals. Optical methods for the reconstruction of such a hologram are also presented.
Sirat, Gabriel, Psaltis, Demetri
openaire +6 more sources