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NIST Authors in Bold

Displaying 76 - 100 of 3310

Trapped-Ion State Detection through Coherent Motion

December 9, 2011
Author(s)
Till P. Rosenband, David Hume, Chin-Wen Chou, David R. Leibrandt, Michael J. Thorpe, David J. Wineland
… is the ability to detect the state of an individual ion. Current detection techniques 3–6 are applicable only to … coherent motion that can be applied to a larger class of ion systems. We couple a “spectroscopy” ion to a “control” ion in the same trap via mutual Coulomb …

Highly Charged Ions

January 1, 2001
Author(s)
John D. Gillaspy
… some of the fundamental properties of highly charged ions, the methods of producing them (with particular emphasis … charge-dependence, electron beam ion traps, highly charged ions, laboratory astrophysics, nanotechnology, nuclear … Highly Charged Ions …

High Fidelity Transport of Trapped-Ion Qubits through an X-Junction Trap Array

April 17, 2009
Author(s)
Brad R. Blakestad, Aaron Vandevender, Christian Ospelkaus, Jason Amini, Joseph W. Britton, Dietrich G. Leibfried, David J. Wineland
… computational fidelity and increases the time required for ion recooling. Here, we report reliable transport of 9 Be + … atom trapping and cooling, computation, ion transport, ion trap array, ion trap junction, quantum computation, … High Fidelity Transport of Trapped-Ion Qubits through an X-Junction Trap Array …

Quantum walk on a line for a trapped ion

October 30, 2009
Author(s)
Peng Xue, Barry Sanders, Dietrich Leibfried
… walk can be experimentally realized for a single trapped ion and how to interpolate between the quantum and random … of the quantum walk is manifested not only in the ion's position but also its phonon number, which makes an ion trap implementation of the quantum walk feasible. …

Trapped-Ion Quantum Logic Gates Based on Oscillating Magnetic Fields

August 29, 2008
Author(s)
Christian Ospelkaus, Christopher Langer, Jason Amini, Kenton R. Brown, Dietrich G. Leibfried, David J. Wineland
… and entangling multi-qubit quantum gates for trapped-ion quantum information processing (QIP). With fields … induced gates for realistic distances between the ion crystal and the electrode surface. … Trapped-Ion Quantum Logic Gates Based on Oscillating Magnetic Fields …

EUV Spectroscopy of Highly Charged Xenon Ions Created Using an Electron Beam Ion Trap

March 27, 2007
Author(s)
K Fahy, E Sokell, G O'Sullivan, A Aguilar, Joshua M. Pomeroy, Joseph N. Tan, John D. Gillaspy
… At the NIST Electron Beam Ion Trap (EBIT), extreme-ultraviolet spectra of xenon ions have been recorded using a flat-field spectrometer. The … clectron beam ion trap, Cowan code, EUV, extreme ultraviolet, highly charge ions, multiply charged ions, spectroscopy, Xenon …

Prospects for atomic clocks based on large ion crystals.

September 8, 2015
Author(s)
John J. Bollinger, Kyle Arnold, Elnur Haciyev, Chern Hui Lee, Eduardo Paez, M. D. Barrett
… feasibility of precision frequency metrology with large ion crystals. For clock candidates with a negative … small number of ions (3). These results hail a new era for ion-based atomic clocks, allowing them to achieve stability … atomic clocks, ion crystals, ion traps, optical frequency metrology, scalar …

EUV spectra of Rb-like to Ni-like dysprosium ions in an electron beam ion trap

August 12, 2014
Author(s)
Deirdre Kilbane, G. O'Sullivan, Yuri A. Podpaly, John D. Gillaspy, Joseph Reader, Yuri Ralchenko
… radiation emitted from highly-charged dysprosium ions was measured at the National Institute of Standards and Technology. The ions were created, trapped, and excited in an electron beam ion trap (EBIT), and the spectra were recorded with a … Dysprosium, spectra, extreme ultraviolet, electron beam ion trap …

MOTIS: A Focused Ion Beam Source Based On Laser-Cooled Atoms

November 10, 2011
Author(s)
Brenton J. Knuffman, Adam V. Steele, Jon Orloff, Mostafa Maazouz, Jabez J. McClelland
… MOTIS: A Focused Ion Beam Source Based On Laser-Cooled Atoms … Focused ion beam, ion microscopy, laser cooling. … MOTIS: A Focused Ion Beam Source Based On Laser-Cooled Atoms …

Techniques for microwave near-field quantum control of trapped ions

January 31, 2013
Author(s)
Ulrich J. Warring, C. Ospelkaus, Yves Colombe, Kenton R. Brown, Jason Amini, M Carsjens, Dietrich G. Leibfried, David J. Wineland
… spin and motional degrees of freedom of one and two 25Mg+ ions enabled two-ion entanglement. In this report, we extend … ion cooling, ion trapping, mechanical effects of light on ions, quantum computation architectures and implementations, … for microwave near-field quantum control of trapped ions …

In Situ Imaging of Highly Charged Ion Irradiated Mica

January 1, 2001
Author(s)
L P. Ratliff, John D. Gillaspy
… surfaces due to the impact of Xe44+ ions by imaging the ion-exposed surfaces with atomic force microscopy in vacuum. … AFM, highly charged ion, mica … In Situ Imaging of Highly Charged Ion Irradiated Mica …

Trapped Ions, Entanglement, and Quantum Computing

May 1, 1998
Author(s)
C J. Myatt, B E. King, D Kielpinski, Dietrich Leibfried, C S. Turchette, Chris S. Wood, Wayne M. Itano, C Monroe, David J. Wineland
… range of 5-20 MHz. The equilibrium positions of pairs of ions that are crystallized in this trap lie along the long … potential to the trap, the micromotion of two crystallized ions may by reduced relative to the case of pure rf … a scheme to use this effect to differentially address the ions. …

Studies of Ion Bombardment in High Density Plasmas Containing CF 4

July 1, 1999
Author(s)
James K. Olthoff, Yicheng Wang
… We report ion energy distributions, relative ion intensities, and absolute total ion current densities at the grounded electrode of an … plasmas, etching plasmas, inductively coupled plasmas, ion energy distributions, ion flux … Studies of Ion Bombardment in High Density Plasmas Containing CF 4 …

Direct-write Lithiation of Silicon Using a Focused Ion Beam of Li+

July 8, 2019
Author(s)
William R. McGehee, Evgheni Strelcov, Vladimir P. Oleshko, Christopher L. Soles, Nikolai B. Zhitenev, Jabez J. McClelland
… processes that govern the performance of lithium ion batteries involve numerous parallel reactions and … of these systems. As a new way to study the behavior of ion transport and reaction in these applications, we report the use of a focused ion beam of Li+ to locally insert controlled quantities of …

Transport dynamics in a high-brightness magneto-optical-trap Li ion source

September 15, 2020
Author(s)
Jamie Gardner, William R. McGehee, Mark D. Stiles, Jabez J. McClelland
… methods for generating high brightness ions for focused ion beam applications. These sources produce ions by … results in a very low emittance, high-brightness ion beam. In a magneto- optical-trap-based ion source, the brightness is ultimately limited by the … MOTIS, cold atom ion source, MOT dynamics, magneto-optical trap, focused ion …

Surface Analysis Studies of Yield Enhancements in Secondary Ion Mass Spectrometry by Polyatomic Projectiles

May 1, 2001
Author(s)
E Fuoco, J Greg Gillen, M Wijesundara, William E. Wallace, L Hanley
… In this paper examine the mechanism of secondary ion yield enhancements previously observed for polyatomic … profilometry. Thus, the > 10x enhancement in secondary ion yield in secondary ion mass spectrometry observed for polyatomic ion projectiles … cluster bombardment, polyatomic ion bombardment, secondary ion mass spectrometry, sputter …

Bilayer crystals of trapped ions for quantum information processing

August 16, 2024
Author(s)
Samarth Hawalder, Prakriti Shahi, Allison Carter, Ana Rey Ayala, John J. Bollinger, Athreya Shankar
… remarkably clean bilayer crystals, wherein hundreds of ions self-organize into two well-defined layers. These … experiments with multilayer 3D crystals of trapped ions. … Bilayer crystals of trapped ions for quantum information processing …

Transition Energies of the D-lines in Na-like Ions

June 5, 2013
Author(s)
John D. Gillaspy, Dmitry D. Osin, Yuri Ralchenko, Joseph Reader, S A. Blundell
… the D1 (3s-3p1/2) and D2 (3s-3p3/2) transitions in Na-like ions of xenon, barium, samarium, gadolinium, dysprosium, … that we are aware of for QED in highly charged Na-like ions. It is also sensitive to retardation effects due to the … atomic spectroscopy, highly charged ions, quantum electrodynamics, electron beam ion trap …

Experiment at NIST towards one-electron ions in circular Rydberg states

June 20, 2011
Author(s)
Joseph N. Tan, Samuel M. Brewer, Nicholas D. Guise
… at NIST to enable tests of theory with oneelectron ions synthesized in circular Rydberg states from captured … highly charged ions, ion trapping, hydrogen-like ions, fundamental constants, Rydberg states … Experiment at NIST towards one-electron ions in circular Rydberg states …
Displaying 76 - 100 of 3310
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