Results 31 to 40 of about 154,233 (325)

Adaptive Continuous-Variable Quantum Key Distribution with Discrete Modulation Regulative in Free Space

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, Lei Mao, Hui Hu, Yijun Wang, Ying Guo   +4 more
doaj   +1 more source

Double-Loop Wavefront Tilt Correction for Free-Space Quantum Key Distribution

IEEE Access, 2019
Both free-space and optical fiber quantum key distribution (QKD) links will coexist in future quantum networks, requiring efficient coupling between both types of channels. However, wavefront distortions introduced by the atmospheric channel can severely
Alejandro Ocampos-Guillen, Jorge Gomez-Garcia, Natalia Denisenko, Veronica Fernandez   +3 more
doaj   +1 more source

Loop space homology associated with the mod 2 Dickson invariants [PDF]

, 2012
Peer ...
Levi, Ran, Ran Levi, Seeliger, Nora, Nora Seeliger   +3 more
core   +1 more source

Dynamic modelling and singularity-free simulation of closed loop multibody system driven by electric motors

Vietnam Journal of Mechanics, 2023
This paper presents the dynamic model and singularity-free simulation of electromechanical systems including closed loop multibody systems, massless gear transmission and electric motors.
Nguyen Quang Hoang, Vu Duc Vuong, Dinh Van Phong, Nguyen Tung Lam   +3 more
doaj   +1 more source

On the Topology of Fibrations with Section and Free Loop Spaces [PDF]

Proceedings of the London Mathematical Society, 2001
23pages (to appear in Proc. London Math. Soc.)
Kallel, Sadok, Sjerve, Denis
openaire   +3 more sources

Time-Delay Signature Concealment in a Security-Enhanced Optical System With Dual-Loop Electro-Optic Self- Feedback Phase Encryption

IEEE Photonics Journal, 2023
In this paper, a novel phase encryption scheme based on a dual-loop electro-optic self-feedback structure is proposed for time-delay signature (TDS) concealment.
Bin Tang, Xulin Gao, Biao Su, Yuehua An, Anbang Wang, Yuncai Wang, Yuwen Qin, Zhensen Gao   +7 more
doaj   +1 more source

A tale of two exponentiations in N=8 supergravity

Physics Letters B, 2019
The structure of scattering amplitudes in supergravity theories continues to be of interest. Recently, the amplitude for 2→2 scattering in N=8 supergravity was presented at three-loop order for the first time.
Paolo Di Vecchia, Andrés Luna, Stephen G. Naculich, Rodolfo Russo, Gabriele Veneziano, Chris D. White   +5 more
doaj   +1 more source

Pentagon functions for scattering of five massless particles

Journal of High Energy Physics, 2020
We complete the analytic calculation of the full set of two-loop Feynman integrals required for computation of massless five-particle scattering amplitudes.
D. Chicherin, V. Sotnikov
doaj   +1 more source

The effect of fiber-reinforced composite versus band and loop space maintainers on oral Lactobacillus acidophilus and Streptococcus mutans levels in saliva

Journal of Indian Society of Pedodontics and Preventive Dentistry, 2018
Background: Orthodontic bands have been shown to alter oral microbial flora that lead to convert caries-free patients to moderate or high caries risk individuals.
Mohamed Abd-Ellatif El-Patal, Moshabab A Asiry, Ibrahim AlShahrani, Samy Youssef El Bayoumy, Mohammed Abo-Elkasem Ahmed Wakwak, Mona Abdelghafar Mohamed Khalil   +5 more
doaj   +1 more source

Asymptotic freedom for $$\lambda \phi ^4_{\star }$$ λϕ⋆4 QFT in Snyder–de Sitter space

European Physical Journal C: Particles and Fields, 2020
We analyze the model of a self-interacting $$\phi ^4_{\star }$$ ϕ⋆4 scalar field theory in Snyder–de Sitter space. After analytically computing the one-loop beta functions in the small noncommutativity and curvature limit, we solve numerically the ...
S. A. Franchino-Viñas, S. Mignemi
doaj   +1 more source