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Physics

Atomic / Molecular / Quantum

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Displaying 601 - 625 of 664

Controlled Exchange Interaction Between Pairs of Neutral Atoms in an Optical Lattice

July 26, 2007
Author(s)
M Anderlini, Patricia J. Lee, Ben L. Brown, Jennifer Sebby-Strabley, William D. Phillips, James V. Porto
Ultra-cold atoms trapped by light, with their inherent quantum coherence and controllability, provide an attractive system for quantum information and for the simulation of complex problems in condensed matter physics. Quantum information processing

Effects of Ozonolysis and Subsequent Growth of Quantum Dots on the Electrical Properties of Freestanding Single-walled Carbon Nanotube Films

June 2, 2007
Author(s)
L C. Teague, S Banerjee, S S. Wong, Curt A. Richter, Bindhu Varughese, J Batteas
A significant challenge exists in probing the transport behavior of chemically modified single- walled carbon nanotubes (SWNTs). Thin films of SWNTs offer one facile approach to integration of these materials into electronics and sensing applications. Data

Preparing and Probing Atomic Number States With an Atom Interferometer

May 17, 2007
Author(s)
Jennifer Sebby-Strabley, Ben L. Brown, M Anderlini, Patricia J. Lee, William D. Phillips, James V. Porto, Philip R. Johnson
We describe the controlled loading and measurement of number-squeezed states and Poisson states in individual sites of a double well optical lattice. These states are input to an atom interferometer that is realized by symmetrically splitting individual

Intermolecular potential and second virial coefficient of the water-nitrogen complex

March 6, 2007
Author(s)
Allan H. Harvey, Akyl S. Tulegenov, Richard J. Wheatley, Matthew P. Hodges
We construct a rigid-body (five-dimensional) potential-energy surface for the water-nitrogen complex using the systematic intermolecular potential extrapolation routine (SIMPER). The intermolecular potential is then extrapolated to the limit of a complete

High resolution analysis of the 26 and 2 9 9 bands of propane

May 8, 2006
Author(s)
Jean-Marie Flaud, Walter J. Lafferty, F. Kwabia Tchana
Using high-resolution Fourier transform spectra of propane recorded in the 13.4 μm (resolution of 0.002 cm-1) and in the 27.4 μm (resolution 0.0011 cm-1) spectral regions, it was possible to perform a thorough assignment of both the ν26 band at 745 cm-1

A chromium surface magneto-optical trap for magnetic microtrap studies

May 1, 2004
Author(s)
M Pichler, S Hill, Jabez J. McClelland
A surface magneto-optical trap for chromium atoms is demonstrated as a first step toward loading atoms into microscopic magnetic traps. Characteristics of the trap and transfer to microscopic magnetic traps will be discussed.

Intermolecular Potential and Second Virial Coefficient of the Water-Hydrogen Complex

January 1, 2004
Author(s)
M P. Hodges, R J. Wheatley, G K. Schenter, Allan H. Harvey
We construct a rigid-body (5-dimensional) potential-energy surface for the water-hydrogen complex using scaled perturbation theory (SPT). An analytic fit of this surface is obtained, and using this, two minima are found: the global miniumum has C 2v

Atoms on Demand: Fast, Deterministic Production of Single Cr Atoms

May 5, 2003
Author(s)
S Hill, Jabez J. McClelland
We have realized a method for producing single Cr atoms on demand by suppressing the stochastic nature of the loading and loss processes of a magneto-optic trap. We observe single-atom trap occupation probabilities as high as (98.7 plus or minus} 0.1)% and

Laboratory Astrophysics Survey of Key X-Ray Diagnostic Lines Using a Microcalorimeter on an Electron Beam Ion Trap

September 1, 2000
Author(s)
E Silver, H. Schnopper, Simon R. Bandler, N Brickhouse, S Murray, M Barbera, E Takacs, John D. Gillaspy, James V. Porto, I Kink, J M. Laming, N. Madden, D Landis, J. Beeman, E. E. Haller
Cosmic plasma conditions created in an Electron Beam Ion Trap (EBIT) make it possible to simulate the dependencies of Key diagnostic x-ray lines on density, temperature, and excitation conditions that exist in astrophysical sources. We used a

Magneto-Optical Trapping of Chromium Atoms

May 1, 2000
Author(s)
C Bradley, Jabez J. McClelland, W Anderson, Robert Celotta
We have constructed a magneto-optical trap for chromium atoms. Using trapping light at 425 nm and two repumping lasers tuned to intercombination transitions, over 10 6 atoms were trapped and average densities of over 10 16 m -3 were obtained. Non

Atomic Physics in Ion Traps

March 1, 1997
Author(s)
C Monroe, John Bollinger
Ion traps allow researchers to control the position and movement of charged particles with exquisite precision, and provide a powerful way to study many atomic phenomena.

Laser Collimation of a Chromium Beam

February 1, 1997
Author(s)
R E. Scholten, R Gupta, Jabez J. McClelland, Robert Celotta, M Levenson, M Vangel
We have studied laser collimation of a chromium atomic beam using a transverse polarization gradient cooling scheme. We present detailed measurements of the angular distribution of atoms on the beam axis, over a broad range of laser intensities and
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