Results 91 to 100 of about 22,663 (294)

Determining the Magic Wavelength Without Modulation of the Trap Depth

Optics
In this paper, the magic wavelength of the 87Sr optical lattice clock is determined by a method that bypasses the need for lattice trap depth modulation.
Jingjing Xia, Feng Guo, Yanhua Zhou, Xiaotong Lu, Hong Chang   +4 more
doaj   +1 more source

Hamiltonian engineering of spin-orbit-coupled fermions in a Wannier-Stark optical lattice clock. [PDF]

Sci Adv, 2022
Aeppli A, Chu A, Bothwell T, Kennedy CJ, Kedar D, He P, Rey AM, Ye J.   +7 more
europepmc   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source

Ytterbium optical lattice clock with instability of order 10⁻¹⁸ [PDF]

, 2022
Ang Zhang, Zhuan-Xian Xiong, Xiaotong Chen, Yanyi Jiang, Jinqi Wang, Congcong Tian, Qiang Zhu, Bing Wang, Dezhi Xiong, Lingxiang He, Long-Sheng Ma, Baolong Lyu   +11 more
openalex   +1 more source

Robust Spot Melting by 3D Spot Arrangements in Electron Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
This work proposes an approach to replace separately melted contours for spot melting in electron beam powder fusion. Adapting the spot arrangements close to the contour combined with stacking yields a comparable surface quality without the inherent challenges of separate contours, as demonstrated, by electron optical images and roughness measurements.
Tobias Kupfer, Lukas Spano, Sebastian Pohl, Carolin Körner, Matthias Markl   +4 more
wiley   +1 more source

Long range transport of ultra cold atoms in a far-detuned 1D optical lattice

, 2012
We present a novel method to transport ultra cold atoms in a focused optical lattice over macroscopic distances of many Rayleigh ranges. With this method ultra cold atoms were transported over 5 cm in 250 ms without significant atom loss or heating.
Campbell G K, Christian Lisdat, Couvert A, Falke St, Griesmaier A, Hommelhoff P, John Dick G, Kessler T Hagemann C Grebing C Legero T Sterr U Riehle F Martin M J Chen L Ye J, Marchant A L, Quessada A, Riehle F, Stephan Falke, Thomas Middelmann, Uwe Sterr   +13 more
core   +1 more source

Numerical Exploration of Thermal Shock Resistance in MgO–C Refractories

Advanced Engineering Materials, EarlyView.
A mesostructure‐resolved numerical framework is developed to evaluate the thermal shock resistance of MgO–C refractories. By modeling interface debonding under rapid temperature changes and introducing a modified thermal shock parameter that accounts for mesocracks, the study shows how graphite content and aggregate size influence thermal shock ...
Jishnu Vinayak Gopi, Stephan Roth, Christos G. Aneziris, Bjoern Kiefer   +3 more
wiley   +1 more source

Minimizing the Dick Effect in an Optical Lattice Clock

, 2009
We discuss the minimization of the Dick effect in an optical lattice clock. We show that optimizing the time sequence of operation of the clock can lead to a significant reduction of the clock stability degradation by the frequency noise of the ...
J. Lodewyck, Jérôme Lodewyck, Jérôme Lodewyck, P. Lemonde, P. Westergaard, Philip G. Westergaard, Philip G. Westergaard, Pierre Lemonde, Pierre Lemonde   +8 more
core   +2 more sources

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

Topological superfluidity with repulsive alkaline-earth atoms in optical lattices

New Journal of Physics, 2019
We discuss a realization of topological superfluidity with fermionic atoms in an optical lattice. We consider a situation where atoms in two internal states experience different lattice potentials: one species is localized and the other itinerant, and ...
L Isaev, A Kaufman, G Ortiz, A M Rey
doaj   +1 more source