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Displaying 226 - 250 of 3085

A Microfabricated Surface-Electrode Ion Trap for Scalable Quantum Information Processing

June 30, 2006
Author(s)
Signe Seidelin, J Chiaverini, Rainer Reichle, John J. Bollinger, Dietrich G. Leibfried, Joseph W. Britton, Janus Wesenberg, Brad R. Blakestad, John D. Jost, David Hume, C. Langer, R Ozeri, Nobuyasu Shiga, David J. Wineland
… quantum information processing, scalable ion traps, surface traps … A Microfabricated Surface-Electrode Ion Trap for Scalable Quantum Information Processing …

A Microfabricated Surface-Electrode Ion Trap for Scalable Quantum Information Processing

June 30, 2006
Author(s)
Signe Seidelin, J Chiaverini, Rainer Reichle, John J. Bollinger, Dietrich G. Leibfried, Joseph W. Britton, Janus Wesenberg, Brad R. Blakestad, John D. Jost, David Hume, C. Langer, R Ozeri, Nobuyasu Shiga, David J. Wineland
… quantum information processing, scalable ion traps, surface traps … A Microfabricated Surface-Electrode Ion Trap for Scalable Quantum Information Processing …

On the Sub-Nanometer Resolution of Scanning Electron and Helium Ion Microscopes

March 1, 2009
Author(s)
Andras Vladar, Michael T. Postek, Bin Ming
… better and better resolution with various electron and ion microscopes and to monitor and maintain these instruments … reproducibly the resolution of scanning electron and ion microscopes. … Helium ion microscope, metrology, sharpness, resolution, scanning … Sub-Nanometer Resolution of Scanning Electron and Helium Ion Microscopes …

Understanding Imaging and Metrology with the Helium Ion Microscope

March 1, 2009
Author(s)
Michael T. Postek, Andras Vladar, Bin Ming
… microscopy, scanning tunneling microscopy and focused ion beam microscopes have all been applied to nanotechnology … new tool for nanotechnology is the scanning helium ion microscope (HIM). The HIM is a new complimentary imaging … imaging and metrology with this instrument entails new ion beam/specimen interaction physics which must be fully …

Optimal Surface-Electrode Trap Lattices for Quantum Simulation with Trapped Ions

June 12, 2009
Author(s)
Roman Schmied , Janus H. Wesenberg, Dietrich Leibfried
… Trapped ions offer long internal state (spin) coherence times and … lattices. To this end it is desirable to be able to trap ions in arbitrary conformations with precisely controlled … Trap Lattices for Quantum Simulation with Trapped Ions …

Trapped Ion Quantum Information Processing with Squeezed Phonons

January 24, 2019
Author(s)
Wenchao Ge, Brian Sawyer, Joseph W. Britton, Kurt Jacobs, John Bollinger, Michael Foss-Feig
… strategy to enhance the coherent interactions in trapped-ion systems via parametric amplification of the ions' motion: … improve the speed and fidelity of two-qubit gates in multi-ion systems, an important ingredient for scalable trapped ion quantum computation. Our results are also directly …

Multi-element logic gates for trapped-ion qubits

December 17, 2015
Author(s)
Ting Rei Tan, John P. Gaebler, Yiheng Lin, Yong Wan, Ryan S. Bowler, Dietrich G. Leibfried, David J. Wineland
… An entangling geometric phase gate between a 9 Be + ion and a 25 Mg + ion employing state-dependent forces is realized through a … Bell-inequality test on Bell states composed of different ion species. … Multi-element logic gates for trapped-ion qubits …

Measurement of the D Line Doublet in High-Z Highly-Charged Sodium-like Ions

July 8, 2009
Author(s)
John D. Gillaspy, Ilija Draganic, Yuri Ralchenko, Joseph Reader, Joseph N. Tan, Joshua M. Pomeroy, Samuel M. Brewer
… a direct observation of the D line doublet of sodium-like ions with Z≥72. Spectra in the 1 nm to 9 nm spectral range … widely split doublet for Hf61+, Ta62+, W63+,and Au68+. The ions were produced and confined in an electron beam ion trap … for several transitions in Si-like, Al-like, and Mg-like ions. …

New Ion Source for High Precision FIB Nanomachining and Circuit Edit

December 31, 2014
Author(s)
Adam V. Steele, Brenton Knuffman, Jabez J. McClelland
… We present a review of the Low Temperature Ion Source (LoTIS): its aims, design, performance data … Focused ion beam, FIB, SIMS, ion source, laser cooling, cold atom ion source, LOTIS … New Ion Source for High Precision FIB Nanomachining and Circuit …

Infrared and visible laser spectroscopy for highly-charged Ni-like ions

April 12, 2017
Author(s)
Yuri Ralchenko
… or infrared (IR) lasers for spectroscopy of highly-charged ions (HCI) has not been particularly extensive so far due to … within the first excited configuration 3d9.4s in Ni-like ions of heavy elements from Z_N =60 to Z_N =92 is within the … highly-charged ions, Ni-like ions, forbidden transitions, visible and …

Summary of ISO/TC 201 Standard: XIII. ISO 18114:2003 - Surface Chemical Analysis - Secondary Ion Mass Spectrometry - Determination of Relative Sensitivity Factors From Ion-Implanted Reference Materials

March 1, 2006
Author(s)
David S. Simons
… Ion-implanted materials are commonly used in secondary-ion mass spectrometry for the calibration of instruments. … factor (RSF) of an element in a specified matrix from an ion-implanted reference material, and to show how the … ion implantation, reference material, relative sinsitivity …

GPS Integrity Architecture Opportunities

September 16, 2013
Author(s)
Marc A. Weiss, Calvin Miles, Karl J. Kovach, John Dobyne, Karen Van Dyke
… ION GNSS 2013 … Proceedings of the 2013 ION GNSS meeting …

A Laser-Cooled Frequency Standard for GPS

September 20, 2011
Author(s)
Thomas P. Heavner, Stephan E. Barlow, Marc A. Weiss, Neil Ashby, Steven R. Jefferts
… ION GNSS 2011 … Proceedings of the ION GNSS 2011 Conference …

Ferrous Ions as Catalysts for Photochemical Reduction of CO 2 in Homogeneous Solutions

May 1, 2000
Author(s)
J Grodkowski, Pedatsur Neta
… Ferrous ions are found to act as efficient catalysts for the … to form the radical anion, TP. - , which reduces Fe(II) ions. The rate constant for this reaction was determined by … and found to be 1.2 x 10 8 L mol -1 s -1 . The Fe(I) ions produced are expected to react with CO 2 to form an …

Arrays of individually controlled ions suitable for two-dimensional quantum simulations

June 13, 2016
Author(s)
Manuel Mielenz, Henning Kalis, Matthias Wittemer, Frederick Hakelberg, Roman Blain, Peter Maunz, Dietrich Leibfried, Tobias Schaetz
… Here we characterise two-dimensional arrays of three ions trapped by radio-frequency fi elds in individually … state, as well as tuning of crucial couplings between ions within experimental sequences. Our work paves the way … analog quatum simulation, quantum control, trapped ions …

Conductance and ion selectivity of a mesoscopic protein nanopore probed with cysteine scanning mutagenesis

November 1, 2005
Author(s)
Petr Merzlyak, Maria-Fatima P. Capistrano, Angela Valeva, John J. Kasianowicz, Oleg V. Krasilnikov
… Nanometer-scale, proteinaceous pores are the basis of ion and macromolecular transport in cells and organelles. Recent studies suggest that ion channels and synthetic nanopores may prove useful in … relationship of nanopores, we are studying the ion conducting properties of channels formed by wild-type and …

High-fidelity indirect readout of trapped-ion hyperfine qubits

April 21, 2022
Author(s)
Stephen Erickson, Jenny Wu, Panyu Hou, Daniel Cole, Shawn Geller, Alexander Kwiatkowski, Scott Glancy, Emanuel Knill, Daniel Slichter, Andrew C. Wilson, Dietrich Leibfried
… a protocol for high-fidelity indirect readout of trapped ion hyperfine qubits, where the state of a 9Be+ qubit ion is mapped to a 25Mg+ readout ion using laser-driven Raman transitions. By partitioning the … High-fidelity indirect readout of trapped-ion hyperfine qubits …

Electrochemical intercalation of lithium ions into NbSe2 nanosheets

September 21, 2016
Author(s)
Albert Davydov, Anand V. Patel, Louisa Meshi, Emily Hitz, Liangbing Hu
… study. We demonstrate successful intercalation of Li-ions into NbSe2 and confirm this result through X-ray … Electrochemical intercalation of lithium ions into NbSe2 nanosheets …

Numerical Simulations of 3D Ion Crystal Dynamics in a Penning Trap using the Fast Multipole Method

April 8, 2025
Author(s)
John Zaris, Wes Johnson, Athreya Shankar, John Bollinger, Scott Parker
… We simulate the dynamics, including laser cooling, of 3D ion crystals confined in a Penning trap using a newly … between ions, which allows us to efficiently study large ion crystals with thousands of ions. In particular, we show that the simulation time scales directly with ion number, rather than with the square of the ion number. By …

A stroboscopic approach to trapped-ion quantum information processing with squeezed phonons

October 24, 2019
Author(s)
Wenchao Ge, Brian C. Sawyer, Joseph W. Britton, Kurt Jacobs, Michael Foss-Feig, John Bollinger
… In trapped-ion quantum information processing, interactions between … (qubits) are mediated by collective modes of motion of an ion crystal. While there are many different experimental … for enhancing the interaction strengths in trapped-ion systems via parametric amplification of the ions' motion. …

A New Low Temperature Chemical Vapor Deposition Technique For Growing Thin Films of Ti, TiN on Copper and TiO2, TixSiy on Silicon

December 1, 1999
Author(s)
Jay H. Hendricks, M I. Aquino-Class, Michael R. Zachariah
… benign byproducts. This new method fordepositing Ti, TiN, TiO 2 , and Ti x Si y thin films has been demonstrated … a thin film on a substrate placed in the reaction zone. TiN and TiO 2 films were produced by the introduction of N 2 … Using this reaction chemistry, we have produced Ti and TiN thin films on Cu substrates at 610 C (considerably lower …
Displaying 226 - 250 of 3085
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