Results 81 to 90 of about 65,256 (288)

A Novel Approach on Rapid Alloy Development of Tool Steels for Laser Powder Bed Fusion by In Situ Alloying

Advanced Engineering Materials, EarlyView.
A novel approach for alloy development in laser powder bed fusion is introduced. Instead of producing massive samples of one composition at a time, prepressed powder bed samples produced from powder mixtures are processed. Guidelines for the selection of precursor powders are developed.
Felix Großwendt, Anna Strauch, Jonathan Lentz, Arne Röttger, Rainer Fechte‐Heinen, Sebastian Weber, Werner Theisen   +6 more
wiley   +1 more source

Photonic Quantum Logic with Narrowband Light from Single Atoms [PDF]

, 2015
Increasing control of single photons enables new applications of photonic quantum-enhanced technology and further experimental exploration of fundamental quantum phenomena.
Barter, Oliver, Dilley, Jerome, Holleczek, Annemarie, Kuhn, Axel, Langfahl-Klabes, Gunnar, Marshall, Graham D., Matthews, Jonathan C. F., Nisbet-Jones, Peter B. R., O'Brien, Jeremy L., Poulios, Konstantinos, Rubenok, Allison, Sparrow, Chris   +11 more
core   +2 more sources

Nanoparticle‐Coated X2CrNiMo17‐12‐2 Powder for Additive Manufacturing—Part II: Processability by Powder Bed Fusion of Metals Using a Laser Beam

Advanced Engineering Materials, EarlyView.
In this manuscript, the processability of X2CrNiMo17‐12‐2 powder coated with silicon carbide, silicon, and silicon nitride nanoparticles is investigated. The amount of nanoparticles varies from 0.25 to 1 vol%. By coating the powder feedstock material with nanoparticles, an enlargement of the process window and an increase in the build rate are achieved.
Nick Hantke, Tim R. Brocksieper, Arne Lüddecke, Tobias Grimm, Arno Kwade, Jan T. Sehrt   +5 more
wiley   +1 more source

Robust spatial coherence 5$\,\mu$m from a room-temperature atom chip

, 2016
We study spatial coherence near a classical environment by loading a Bose-Einstein condensate into a magnetic lattice potential and observing diffraction. Even very close to a surface (5$\,\mu$m), and even when the surface is at room temperature, spatial
Folman, Ron, Groswasser, David, Japha, Yonathan, Keil, Mark, Zhou, Shuyu   +4 more
core   +1 more source

Calibration of a single atom detector for atomic micro chips [PDF]

, 2007
We experimentally investigate a scheme for detecting single atoms magnetically trapped on an atom chip. The detector is based on the photoionization of atoms and the subsequent detection of the generated ions.
A. Günther, A. Stibor, C. J. Vale, C. Zimmermann, D. Komma, G. Birkl, H. Rubinsztein-Dunlop, I. S. Gilmore, J. Fortágh, S. Kraft, T. Campey, T. Schumm   +11 more
core   +2 more sources

Nanoparticle‐Coated X2CrNiMo17‐12‐2 Powder for Additive Manufacturing – Part I: Surface, Flowability, and Optical Properties of SiC, Si, and Si3N4 Coated Metal Powders

Advanced Engineering Materials, EarlyView.
Herein, silicon‐based nanoparticle coatings on X2CrNiMo17‐12‐2 metal powder are presented. The coating process scale, process parameters, nanoparticle size (65–200 nm) as well as the coating amount are discussed regarding powder properties. The surface roughness affects the flowability, while reflectance depends on the coating material and surface ...
Arne Lüddecke, Nick Hantke, Harald Zetzener, Jan T. Sehrt, Arno Kwade   +4 more
wiley   +1 more source

Quantum computing implementations with neutral particles

, 2011
We review quantum information processing with cold neutral particles, that is, atoms or polar molecules. First, we analyze the best suited degrees of freedom of these particles for storing quantum information, and then we discuss both single- and two ...
A. Andre, A. Gaëtan, A. Lengwenus, A. Lengwenus, A. Negretti, A.J. Daley, A.S. Sørensen, A.S. Sørensen, Antonio Negretti, C. Bruder, C. Deutsch, C. Lee, C. Trefzger, C. Weitenberg, C.M. Tesch, D. DeMille, D. Jaksch, D. Jaksch, D. Jaksch, D. Møller, D. Schrader, D. Stick, D.J. Wineland, D.P. DiVincenzo, D.S. Petrov, E. Brion, E. Brion, E. Brion, E. Charron, E. Charron, E. Charron, E. Kuznetsova, E. Urban, G. Birkl, G. Chen, G.D. Chiara, G.K. Brennen, H. Wu, H. Yan, H.-J. Briegel, I. Lesanovsky, J. Beugnon, J. Majer, J. Mompart, J. Mozley, J. Schmiedmayer, J. Verdú, J.F. Sherson, J.H. Wesenberg, K. Christandl, K. Eckert, K. Tordrup, K. Tordrup, K.D. Nelson, L. Isenhower, L. Tian, M. Greiner, M. Morinaga, M. Müller, M. Saffman, M. Singh, M. Steffen, M.A. Cirone, M.A. Nielsen, M.D. Lukin, M.F. Riedel, M.H. Goerz, M.P.A. Fisher, N. Lundblad, O. Mandel, P. Böhi, P. Böhi, P. Doria, P. Rabl, P. Treutlein, P. Treutlein, P. Treutlein, P.F. Herskind, P.F. Herskind, Philipp Treutlein, R. Dumke, R. Gehr, R.J. Schoelkopf, S. Bergamini, S. Hofferberth, S. Schulz, S. Seidelin, S. Whitlock, S.E. Sklarz, S.F. Yelin, T. Calarco, T. Calarco, T. Calarco, T. Calarco, T. Calarco, T. Calarco, T. Pellizzari, Tommaso Calarco, V. Finkelstein, V.F. Krotov, W.S. Bakr, W.S. Bakr, Y. Colombe, Y. Kubo, Y.-J. Wang   +104 more
core   +1 more source

894 nm high temperature operating vertical-cavity surface-emitting laser and its application in Cs chip-scale atomic-clock system

Acta Physica Sinica, 2016
In this study, an 894 nm high temperature vertical-cavity surface-emitting laser (VCSEL) is reported. Furthermore, a Cs chip-scale atomic clock (CSAC) system experiment based on this VCSEL is carried out.To achieve low threshold/power consumption under high temperature condition, the VCSEL epitaxial structure is optimized.
Zhong Chu-Yu, Zhang Jian, Wang Li-Jun, Gu Si-Hong, Zhang Xing, Ning Yong-qiang, Zhang Jianwei, Zhang Yi, Huang You-Wen   +8 more
openaire   +2 more sources

High‐Rate Deposition and Characterization Study of CoZrO Films for On‐Chip Power Applications

Advanced Engineering Materials, EarlyView.
This study introduces a high‐rate reactive sputtering process for CoZrO films, aimed at large‐scale production of on‐chip magnetic components compatible with complementary metal oxide semiconductor (CMOS) fabrication. Characterization of the deposited films reveals that ideal magnetic properties require chemical compositions in a narrow Co:O range and ...
Elaine Ng, Leopoldo A. Hernandez, Jianliang Lin, Elizabeth Young‐Dohe, Charles R. Sullivan, Alex J. Hanson, Jean Anne C. Incorvia   +6 more
wiley   +1 more source

Quantifying Finite Temperature Effects in Atom Chip Interferometry of Bose-Einstein Condensates

, 2009
We quantify the effect of phase fluctuations on atom chip interferometry of Bose-Einstein condensates. At very low temperatures, we observe small phase fluctuations, created by mean-field depletion, and a resonant production of vortices when the two ...
Fromhold, T. M., Hutchinson, D. A. W., Judd, T. E., Scott, R. G.   +3 more
core   +1 more source