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Physics

Atomic / Molecular / Quantum

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Displaying 426 - 450 of 1133

2p x-ray absorption spectroscopy of 3d transition metal systems

April 3, 2021
Author(s)
Eric L. Shirley, John Vinson, Frank de Groot, Hebatalla Elnaggar, Federica Frati, Ru-pan Wang, Mario Delgado, Michel van Veenendaal, Maurits Haverkort, Robert Green, Yaroslav Kvashnin, Atsushi Hariki, Harry Ramanantoanina, Claude Daul, Bernard Delley, Michael Odelius, Marcus Lundberg, Oliver Kuhn, Sergey Bokarev, Keith Gilmore, Mauro Stener, Giovanni Fronzoni, Piero Decleva, Peter Kruger, Marius Retegan, Javier Fernandez-Rodriguez, Gerritt van der Laan, Yves Joly, Christian Vorwerk, Claudia Draxl, John Rehr, Arata Tanaka, Hidekazu Ikeno
A variety of methods are presented that are presently used to treat x-ray absorption spectra of transition-metal 2p edges in a wide range of compounds. Different methods include different methods of chemical realism versus featuring the simplifications of

Phonon redshift and Hubble friction in an expanding BEC

March 11, 2021
Author(s)
Stephen Eckel, Ted Jacobson
We revisit the theoretical analysis of an expanding ring-shaped Bose-Einstein condensate. Starting from the action and integrating over dimensions orthogonal to the phonon's direction of travel, we derive an effective one-dimensional wave equation for

Note: A Bitter-type electromagnet for complex atomic trapping and manipulation

February 12, 2021
Author(s)
Jacob L. Siegel, Daniel Barker, James A. Fedchak, Julia Scherschligt, Stephen Eckel
We create a pair of symmetric Bitter-type electromagnet assemblies capable of producing multiple field configurations including uniform magnetic fields, spherical quadruple traps, or Ioffe-Pritchard magnetic bottles. Unlike other designs, our coil allows

A quantum enhanced search for dark matter axions

February 10, 2021
Author(s)
K M. Backes, Daniel A. Palken, S A. Kenany, Benjamin M. Brubaker, S B. Cahn, A Droster, Gene C. Hilton, Sumita Ghosh, H. Jackson, Steve K. Lamoreaux, A. F. Feder, Konrad Lehnert, S M. Lewis, Maxime Malnou, R H. Maruyama, N M. Rapidis, M Simanovskaia, Sukhman Singh, D H. Speller, I Urdinaran, Leila R. Vale, E. C. van Assendelft, K van Bibber, H. Wang

Coherent optical processes with an all-optical atomic simulator

January 4, 2021
Author(s)
Ivan Burenkov, Sergey Polyakov, Olga Tikhonova, Irina Novikova
We show how novel photonic devices such as broadband quantum memory and efficient quantum frequency transduction can be implemented using three-wave mixing processes in a 1D array of nonlinear waveguides evanescently coupled to nearest neighbors. We do
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