Results 161 to 170 of about 80,548 (342)
, 2015 The concepts and considerations that could leads to the development of a novel kind of classes of wavefront sensors inwhich the information is retrieved by the absence of photons rather than from their presence are shown. In quantumoptics the concept of ”sensing” an object without actually having photons interacting with it is already known ...
openaire +3 more sources
Enhancing Realism in Holographic Augmented Reality Displays Through Occlusion Handling
Laser &Photonics Reviews, EarlyView.The proposed optical‐see‐through holographic AR display with occlusion support presents highly realistic 3D AR scenes by projecting speckle‐suppressed, high‐contrast 3D holographic virtual images onto the corresponding real‐scene masks. By leveraging the occlusion capability, virtual shadows based on a Poisson distribution can also be rendered for the ...
Woongseob Han +2 more
wiley +1 more source
Global and microlocal aspects of Dirac operators: Propagators and Hadamard states
Mathematische Nachrichten, EarlyView.Abstract We propose a geometric approach to construct the Cauchy evolution operator for the Lorentzian Dirac operator on Cauchy‐compact globally hyperbolic 4‐manifolds. We realize the Cauchy evolution operator as the sum of two invariantly defined oscillatory integrals—the positive and negative Dirac propagators—global in space and in time, with ...
Matteo Capoferri, Simone Murro
wiley +1 more source
Visualization of Hemispherical Post‐Detonation Fireball Internal Structures
Propellants, Explosives, Pyrotechnics, EarlyView.ABSTRACT Hemispherical charges are initiated above a transparent plate in a half‐plane configuration, allowing optical access to the internal regions of the luminous fireball. High‐speed visualization enables characterization of the internal luminous structure, showing clearly the bright shell and dark core regions.
Samuel N. Brunkow +5 more
wiley +1 more source
A baseline study of a low-cost, high-resolution, imaging system using wavefront reconstruction [PDF]
, 2001 David C. Hyland +2 more
openalex +2 more sources
<title>Wavefront measurements at ESA's Optical Ground Station and simulation of heterodyne receiver performance</title> [PDF]
, 2000 Dirk Giggenbach
openalex +1 more source
Quarterly Journal of the Royal Meteorological Society, EarlyView.This article presents a climatology of trapped lee waves over Britain and Ireland using machine‐learning techniques applied to high‐resolution model output driven by reanalysis data. This climatology builds on previous work and is much more comprehensive and covers a longer time period than previous studies.
Jonathan Coney +6 more
wiley +1 more source
Dynamic Continuous Variable Quantum Key Distribution for Securing a Future Global Quantum Network
Advanced Quantum Technologies, EarlyView.The article explores securing a dynamic global quantum network using continuous variable QKD, proposing a unified three‐layer network architecture for integrating existing QKD networks. It evaluates secret key rates across various channels and introduces the link capacity as a metric for determining the optimum path for secret key distribution in a ...
Mikhael T. Sayat +4 more
wiley +1 more source
Nonreciprocal Entanglement of Frequency‐Distinct Qubits
Advanced Quantum Technologies, EarlyView.This work demonstrates the first spatiotemporal superconducting metasurface for nonreciprocal entanglement between frequency‐mismatched qubits at millikelvin temperatures. Leveraging space‐time‐modulated Josephson field‐effect transistors (JoFETs), the platform enables unidirectional, spurious‐free quantum state conversion with high efficiency.
Sajjad Taravati
wiley +1 more source