Results 11 to 20 of about 991,958 (262)
A survey of free space optical networks
Digital Communications and Networks, 2017 Free Space Optical (FSO) networks, also known as optical wireless networks, have emerged as viable candidates for broadband wireless communications in the near future.
In Keun Son, Shiwen Mao
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Entropy, 2021 Polarization encoding has been extensively used in quantum key distribution (QKD) implementations along free-space links. However, the calculation model to characterize channel transmittance and quantum bit error rate (QBER) for free-space QKD has not ...
Tianyi Wu +7 more
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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.
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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
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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
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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.
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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
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Lipschitz-Free Spaces Over Ultrametric Spaces [PDF]
Mediterranean Journal of Mathematics, 2015 The only change in the latest version is the second author's grant information. Question 1 from the previous version has been answered - see Remark 15 for the solution. Preprint was accepted in Mediterr.
Cúth, Marek, Doucha, Michal
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Free-Space Quasi-Phase Matching
2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2022 A new approach to the quasi-phase matching of nonlinear materials based on the free space multipass cells is presented. The method is applicable to all types of nonlinear crystals with non-zero susceptibility χ(2).
Nazar Kovalenko +3 more
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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
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