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Conflicting Observations Resolved by a Far IR and UV/Vis Study of the NO 3 Radical

May 4, 2009

Author(s)

Helmut Beckers, Helge Willner, Marilyn E. Jacox

By codeposition of NO/Ne and O2/Ne mixtures at 6 K, weakly bound complexes between O2 and NO are formed. They exhibit a strong, structured charge transfer UV band at lambda(max) = 275 nm. The UV band disappears during UV irradiation of the neon matrix

Observation of a 2D Bose-gas: from thermal to fractured quasi-condensate to superfluid

May 1, 2009

Author(s)

Pierre Clade, Changhyun Ryu, Anand Ramanathan, Kristian Helmerson, William D. Phillips

This paper presents experimental results on a Bose gas in a quasi-2D geometry near the Berezinskii,Kosterlitz and Thouless (BKT) transition temperature. By measuring the density profile, in situ and after time of flight, and the coherence length of the gas

Electromagnetically induced transparency in a superconducting three-level system

April 16, 2009

Author(s)

Mika Sillanpaa, Katarina Cicak, Fabio Altomare, Jae Park, Raymond Simmonds, Jian Li, G. S. Paraoanu, Pertti Hakonen

When a three-level quantum system is irradiated by an intense coupling field resonant with two of the three possible transitions, the resonant absorption of the system from its ground state by an additional radiation field is suppressed. This effect, where

Optical detection of NMR J -spectra at zero magnetic field

March 28, 2009

Author(s)

M Ledbetter, C.W. Crawford, A Pines, D.E. Wemmer, Svenja A. Knappe, John Kitching, D Budker

Nuclear magnetic resonance (NMR) has emerged as one of the most powerful analytical tools for elucidating molecular structure. One of the parameters typically extracted from NMR spectra which is necessary to fully understand the structure of a molecule is

Study of hydrogen diffusion in superprotonic ionic conductors, MHXO4, by m+SR and QENS

February 21, 2009

Author(s)

Yutaka Ikedo, Hiroshi Nozaki, Masashi Harada, Jun Sugiyama, Taku J. Sato, Yasumitsu Matsuo, Kusuo Nishiyama, James S. Lord, Yiming Qiu, John R. Copley

In order to clarify the mechanism of high proton conductivity (σH+) for superprotonic ionic conductors, MHXO4, where M=Cs and Rb, X=S and Se, muon-spin rotation and relaxation (μ+SR) and quasi-elastic neutron scattering (QENS) measurements have been

Matter-wave self-imaging by atomic center-of-mass motion induced interference

December 18, 2008

Author(s)

Ke Li, Lu Deng, Edward W. Hagley, M.S. Zhan, Marvin G. Payne

We demonstrate matter-wave self-imaging in a stationary light field in the non-Raman-Nath limit. We show that in a non-instantaneous pulsed standing wave grating significant contributions due to the non-negligible atomic center of mass motion and

Assignment, Fit, and Theoretical Discussion of the nu-10 Band of Acetaldehyde Near 509 cm -1

September 4, 2008

Author(s)

I Kleiner, N Moazzen-Ahmadi, A R. McKellar, Thomas A. Blake, G Moruzzi, Jon T. Hougen

The lowest small-amplitude vibration in acetaldehyde (CH3CHO) is the in-plane aldehyde scissors mode ?10 at 509 cm?1. This mode lies about 100 cm?1 above the top of the barrier to internal rotation of the methyl group and is relatively well separated from

Robust Optical Design of Angled Multilayer Dielectric Mirrors Optimized for Rubidium Vapor Cell Return Reflection

August 1, 2008

Author(s)

M A. Perez, John Kitching, A Shkel

This paper reports on the design and implementation of thin film multilayer dielectric reflectors on the sidewalls of micromachined reflector cells. Due to shadowing within the cavity, significant variations in the thicknesses of the thin films will be

Quasielastic neutron scattering experiments of orthorhombic ammonia borane

May 16, 2008

Author(s)

Nancy J. Hess, Michael R. Hartman, Craig Brown, Eugene Mamontov, Abhijeet Karkamkar, David J. Heldebrant, Luke Daemen, Tom Autrey

Nature and Tunability of Enhanced Hydrogen Binding in Metal-Organic Frameworks with Exposed Transition Metal Sites

May 6, 2008

Author(s)

Wei Zhou, Taner N. Yildirim

Metal−organic framework (MOF) compounds with exposed transition-metal (TM) sites were recently found to exhibit significantly larger experimental heats of adsorption of H2 than classical MOFs, thus attracting greater attention. Here we show that the

Fundamental Constants and Tests of Theory in Rydberg States of Hydrogen-like Ions

April 22, 2008

Author(s)

Ulrich D. Jentschura, Peter Mohr, Joseph N. Tan, B. J. Wundt

A comparison of precision frequency measurements to quantum electrodynamics (QED) predictions for Rydberg states of hydrogen-like ions can yield information on values of fundamental constants and test theory. With the results of a calculation of a key QED

The water-oxygen dimer: first-principles calculation of an extrapolated potential energy surface and second virial coefficients.

August 20, 2007

Author(s)

Allan H. Harvey, Richard J. Wheatley

The Systematic Intermolecular Potential Extrapolation Routine (SIMPER) is applied to the water-oxygen complex to obtain a five-dimensional potential energy surface. This is the first application of SIMPER to open-shell molecules, and it is the first use

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

Introduction to Journal of Modern Optics Special Issue on Single Photon: Sources, Detectors, Applications and Measurement Methods

January 20, 2007

Author(s)

J Cheung, Alan L. Migdall, Stefania Castelletto

In October 2005, a 2-day follow up workshop, Single photon: sources, detectors, applications and measurement methods, was held at the NPL (National Physical Laboratory, UK). The focus for this workshop was to report on the key developments since the

Comparing Plasma Population Kinetics Codes: Review of the NLTE-3 Kinetics Workshop

June 1, 2006

Author(s)

C Bowen, R W. Lee, Yuri Ralchenko

Comparison of plasma population kinetics codes, which has become an important tool for their testing and verification, was the subject of the 3rd Non-LTE Code Comparison Workshop held at the National Institute of Standards and Technology in December 2003

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

Wavelengths, Transition Probabilities and Energy Levels for the Spectra of Rubidium (Rb I through Rb XXXVII)

February 16, 2006

Author(s)

Jean E. Sansonetti

Energy levels, with classifications and uncertainties, have been compiled for the spectra of the neutral atom and all positive ions of rubidium (Z=37). Wavelengths with classifications, intensities, and transition probabilities are also tabulated. In

Efficient multi-wave mixing in ultra slow propagation regime and the role of multi-photon quantum destructive interference,

October 1, 2004

Author(s)

Y Wu, M G. Payne, Edward W. Hagley, Lu Deng

We analyze a lifetime-broadened four-state four-wave-mixing (FWM) scheme in the ultraslow propagation regime and show that the generated FWM field can acquire the same group velocity and pulse shape as those of an ultraslow pump field. We show that a new

Ultra slow bright and dark optical solitons in a cold three-state medium,

September 1, 2004

Author(s)

Y Wu, Lu Deng

We show the formation of ultraslow bright and dark optical solitons in a lifetime-broadened three-state atomic system under Raman excitation. We also discuss why such ultraslow optical solitons may not exist under the conditions of the usual

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.

Performance of a feedback-controlled, deterministic source of single Cr atoms

March 1, 2004

Author(s)

S Hill, Jabez J. McClelland

A magneto-optic trap with feedback-controlled loading and loss rates is used to realize a deterministic source of single Cr atoms with single-atom occupation probability as high as 0.987 plus or minus} 0.001. We present a series of measurements of the

Achieving multi-frequency state entanglement with ultra-slow multi-wave mixing

January 1, 2004

Author(s)

Y Wu, Lu Deng

We propose a scheme to achieve the entanglement of N photon modes (frequency modes) with perfectly efficient ultraslow multiwave mixing in a cold atomic medium. In addition, the method provides an efficient approach to realizing frequency tunability.