Results 21 to 30 of about 117,447 (292)

Wykorzystanie STEAM-owego projektu w kształtowaniu wybranych pojęć geometrycznych u przedszkolaków

open access: yesProblemy Wczesnej Edukacji, 2021
The article presents the concept of using steam design in the shaping of geometric concepts in preschool children. Attention was paid to shaping the spatial imagination of children, i. e.
Agnieszka Bojarska-Sokołowska
doaj   +1 more source

Flattop Beam Shaping Using Hybrid Gratings

open access: yesIEEE Photonics Journal, 2022
A new method of laser beam shaping with hybrid gratings is presented. The hybrid gratings consist of a blazed grating and a gradient binary grating. The blazed grating is used to separate the incident Gaussian beam into zero order and nonzero diffraction
Zhongsheng Zhai   +5 more
doaj   +1 more source

Fast holonomic quantum computation on superconducting circuits with optimal control

open access: yes, 2020
Geometric phases induced in quantum evolutions have built-in noise-resilient characters, and thus can find applications in many robust quantum manipulation tasks.
Chen, Tao, Li, Sai, Xue, Zheng-Yuan
core   +1 more source

Enhanced Performance of CAP-Modulated Visible Light Communication System Utilizing Geometric Shaping and Rotation Coding

open access: yesIEEE Photonics Journal, 2019
Aiming to improve the performance of free space visible light communication (VLC) system, we combined the use of rotation coding together with geometric shaping (GS) technology in carrierless-amplitude-and-phase (CAP) modulation visible light ...
Fangchen Hu   +4 more
doaj   +1 more source

Constellation Shaped 3D HQAM-DPSK Modulation for Single Wavelength Multi-Dimensional Optical Transmission

open access: yesIEEE Access, 2023
A novel concept for single wavelength high spectral-efficient multi-dimensional optical transmission with geometric and probabilistic constellation shaping and bit mapping technique is presented in this study.
Jinwoo Park   +3 more
doaj   +1 more source

Geometric phase gate on an optical transition for ion trap quantum computation [PDF]

open access: yes, 2008
We propose a geometric phase gate of two ion qubits that are encoded in two levels linked by an optical dipole-forbidden transition. Compared to hyperfine geometric phase gates mediated by electric dipole transitions, the gate has many interesting ...
C. F. Roos   +7 more
core   +1 more source

Tropical Geometric Variation of Tree Shapes

open access: yesDiscrete & Computational Geometry, 2022
AbstractWe study the behavior of phylogenetic tree shapes in the tropical geometric interpretation of tree space. Tree shapes are formally referred to as tree topologies; a tree topology can also be thought of as a tree combinatorial type, which is given by the tree’s branching configuration and leaf labeling.
Bo Lin, Anthea Monod, Ruriko Yoshida
openaire   +2 more sources

A Single-Celled Metasurface for Multipolarization Generation and Wavefront Manipulation

open access: yesNanomaterials, 2022
Due to their unprecedented ability to flexibly manipulate the parameters of light, metasurfaces offer a new approach to integrating multiple functions in a single optical element.
Ruonan Ji   +8 more
doaj   +1 more source

Controlled Lagrangians and the stabilization of mechanical systems. II. Potential shaping [PDF]

open access: yes, 2001
For pt.I, see ibid., vol.45, p.2253-70 (2000). We extend the method of controlled Lagrangians (CL) to include potential shaping, which achieves complete state-space asymptotic stabilization of mechanical systems.
Bloch, Anthony M.   +3 more
core   +2 more sources

Broadband Multichannel Optical Vortex Generators via Patterned Double-Layer Reverse-Twist Liquid Crystal Polymer

open access: yesCrystals, 2020
The capacity of an optical communication system can be greatly increased by using separate orbital angular momentum (OAM) modes as independent channels for signal transmission and encryption.
Hanqing Zhang   +4 more
doaj   +1 more source

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