Results 21 to 30 of about 1,020,372 (262)
Multi-channel free space optical convolutions [PDF]
EPJ Web of Conferences, 2023 Convolutional layers are a critical feature of modern neural networks and require significant com-putational resources. In response, optical accelerators have been developed as a low-energy, high-bandwidth approach for performing large-scale convolutions.
Song Alexander +2 more
doaj +1 more source
Singularity-free space-time [PDF]
Physical Review D, 1992 We show that the solution published in Ref.1 is geodesically complete and singularity-free. We also prove that the solution satisfies the stronger energy and causality conditions, such as global hyperbolicity, causal symmetry and causal stability. A detailed discussion about which assumptions in the singularity theorems are not fulfilled is performed ...
Chinea, F. J. (Francisco Javier), 1949- +2 more
openaire +6 more sources
Mathematics, 2022 The finite sampling bandwidth of an analog-to-digital converter has a negative effect on the continuous-variable quantum key distribution (CVQKD), which leaves a potential loophole for an eavesdropper and weakens the practical security of the system.
Yiwu Zhu +4 more
doaj +1 more source
Fundamenta Mathematicae, 2000 Free spaces in the context of the maps with hereditarily indecomposable fibers are considered. Answering questions of Krasinkiewicz it is proved that cones, polyhedra, Menger manifolds and some others are free.
Song, Jianwei, Tymchatyn, E. D.
openaire +2 more sources
Mathematics, 2023 Quantum teleportation is one of the fundamental primitives of quantum cryptography. In order to achieve a wider range of high-capacity information transfer, we propose a free-space quantum teleportation (QT) protocol with orbital angular momentum (OAM ...
Xinchao Ruan +6 more
doaj +1 more source
The phase shift induced by a single atom in free space [PDF]
Journal of the European Optical Society-Rapid Publications, 2013 In this article we theoretically study the phase shift a single atom imprints onto a coherent state light beam in free space. The calculations are performed in a semiclassical framework.
Sondermann M., Leuchs G.
doaj +1 more source
Inverse‐Design Methodology for Generating Twisted Ultrasonic Motor in Free Space
Advanced Intelligent Systems, 2023 A new level of freedom is made possible by orbital angular momentum (OAM), which can be used to create twisted ultrasonic motors for particle manipulation and control.
Chuanxin Zhang +3 more
doaj +1 more source
THE FREQUENCY SPACE OF A FREE GROUP [PDF]
International Journal of Algebra and Computation, 2005 We analyze the structure of the frequency spaceQ(F) of a nonabelian free group F = F(a1,…,ak) consisting of all shift-invariant Borel probability measures on ∂F and construct a natural action of Out(F) on Q(F). In particular we prove that for any outer automorphism ϕ of F the conjugacy distortion spectrum of ϕ, consisting of all numbers ‖ϕ(w)‖/‖w ...
openaire +2 more sources
Journal of Marine Science and Engineering, 2019 The effect of the maritime environment on radio frequency (RF) propagation is not well understood. In this work, we study the propagation of ad hoc 2.4 GHz and 5 GHz wireless local area network systems typically used for near-shore operation of unmanned ...
Brennan Yamamoto +6 more
doaj +1 more source
Lipschitz-free Spaces on Finite Metric Spaces [PDF]
Canadian Journal of Mathematics, 2019 AbstractMain results of the paper are as follows:(1) For any finite metric space$M$the Lipschitz-free space on$M$contains a large well-complemented subspace that is close to$\ell _{1}^{n}$.(2) Lipschitz-free spaces on large classes of recursively defined sequences of graphs are not uniformly isomorphic to$\ell _{1}^{n}$of the corresponding dimensions ...
Dilworth, Stephen J. +2 more
openaire +2 more sources