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Physics

Atomic / Molecular / Quantum

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Displaying 476 - 500 of 1133

The joint automated repository for various integrated simulations (JARVIS) for data-driven materials design

November 12, 2020
Author(s)
Kamal Choudhary, Kevin Garrity, Andrew C. Reid, Brian DeCost, Adam Biacchi, Angela R. Hight Walker, Zachary Trautt, Jason Hattrick-Simpers, Aaron Kusne, Andrea Centrone, Albert Davydov, Francesca Tavazza, Jie Jiang, Ruth Pachter, Gowoon Cheon, Evan Reed, Ankit Agrawal, Xiaofeng Qian, Vinit Sharma, Houlong Zhuang, Sergei Kalinin, Ghanshyam Pilania, Pinar Acar, Subhasish Mandal, David Vanderbilt, Karin Rabe
The Joint Automated Repository for Various Integrated Simulations (JARVIS) is an integrated infrastructure to accelerate materials discovery and design using density functional theory (DFT), classical force-fields (FF), and machine learning (ML) techniques

Towards data-driven next-generation transmission electron microscopy

October 26, 2020
Author(s)
Steven R. Spurgeon, Colin Ophus, Lewys Jones, Amanda K. Petford-Long, Sergei Kalinin, Matthew J. Olszta, Rafal Dunin-Borkowski, Norman Salmon, Khalid Hattar, Wei-Chang Yang, Renu Sharma, Yingge Du, Ann Chiaramonti Debay, Haimei Zheng, Edgar C. Buck, Libor Kovarik, R. Lee Penn, Dongsheng Li, Xin Zhang, Mitsuhiro Murayama, Mitra D. Taheri
The rapidly evolving field of electron microscopy touches nearly every aspect of modern life, underpinning impactful materials discoveries in applications such as quantum information science, energy, and medicine. As the field enters a new decade, a

Confinement of an alkaline-earth element in a grating magneto-optical trap

October 15, 2020
Author(s)
Ananya Sitaram, Peter Elgee, Gretchen K. Campbell, Daniel Barker, Nikolai Klimov, Stephen Eckel
We demonstrate a compact magneto-optical trap (MOT) of alkaline-earth atoms using a nanofabricated diffraction grating chip. A single input laser beam, resonant with the broad 1S0 to 1P1 transition of strontium, forms the MOT in combination with three

Nonlinearity and ionization in Xe: Experiment-based calibration of a numerical model

October 12, 2020
Author(s)
Joseph Tolliver, Sina Zahedpour, Jared Wahlstrand, H M. Milchberg, Miroslav Kolesik
A model for the optical response of Xenon, including the nonlinear polarization and ionization rate, is calibrated with the help of space-and-time resolved measurements. Utilizing an idea of universal functional form for the response as a function of the

Enhanced transport of spin-orbit coupled Bose gases in disordered potentials

September 17, 2020
Author(s)
Yuchen Yue, Ian Spielman, Carlos S? de Melo
Anderson localization is single particle localization phenomena in disordered media that is accompanied by an absence of diffusion. Spin-orbit coupling (SOC) describes an interaction between a particle's spin and its momentum that directly affects its

Development of NIST Atomic Databases and OnlineTools

September 5, 2020
Author(s)
Yuri Ralchenko, Alexander Kramida
Over the last 25 years, the atomic standard reference databases and online tools developed at the National Institute of Standards and Technology (NIST) provide users around the world with the highest-quality data on various atomic parameters (e.g., level

Measurement of the 2P1/2-2P3/2 fine structure splitting in fluorine-like Kr, W, Re, Os and Ir

September 2, 2020
Author(s)
Galen O'Neil, Samuel C. Sanders, Paul Szypryt, Dipti Goyal, Amy Gall, Yang Yang, Samuel M. Brewer, W.Bertrand (Randy) Doriese, Joseph Fowler, Daniel Swetz, Joseph N. Tan, Joel Ullom, Andrey V. Volotka, Endre Takacs, Yuri Ralchenko
Quantum electrodynamics (QED) is currently considered to be one of the most accurate theories of fundamental interactions. As its extraordinary precision offers unique scientific opportunities, e.g., search for new physics, stringent experimental tests of

Feshbach resonances in p-wave three-body recombination within Fermi-Fermimixtures of open-shell 6-Li and closed-shell 173-Yb atoms

August 14, 2020
Author(s)
Aliana Green, Hui Li, Jun Hui See Toh, Xinxin Tang, Katherine McCormick, Ming Li, Eite Tiesinga, Svetlana Kotochigova, Subhadeep Gupta
We report on observations and modeling of interspecies magnetic Feshbach resonances in dilute ultracold mixtures of open-shell alkali-metal 6 Li and closed-shell 173 Yb atoms with temperatures just above quantum degeneracy for both fermionic species

Mechanical Quantum Sensing in the Search for Dark Matter

August 13, 2020
Author(s)
Jacob Taylor, Gadi Afek, Sunil Bhave, Daniel Carney, Gordan Krnjaic, David Moore, Robinjeet Singh, Cindy Regal, Benjamin M. Brubaker, Andrew Geraci, Jonathan D. Cripe, Sohitri Ghosh, Jack Harris, Anson Hook, Jonathan Kunjummen, Rafael Lang, Li Tongcang, Tongyan Lin, Zhen Liu, Joseph Lykken, Lorenzo Magrini, Jack Manley, Nobuyuki Matsumoto, Alissa Monte, Fernando Monteiro, Thomas Purdy, C. J. Riedel, Swati Singh, Kanupriya Sinha, Juehang Qin, Dalziel Wilson, Yue Zhao
Numerous astrophysical and cosmological observations are best explained by the existence of dark matter, a mass density which interacts only very weakly with visible, baryonic matter. Searching for the extremely weak signals produced by this dark matter
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