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Search Publications

NIST Authors in Bold

Displaying 326 - 350 of 2768

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. …

Quantum Computing With Ions

August 1, 2008
Author(s)
David J. Wineland, C Monroe
… quantum information processing with the use of trapped ions. It is intended to give a simple introduction to the … quantum control, quantum-state engineering, trapped ions … Quantum Computing With Ions …

Quantum simulation of the hexagonal Kitaev model with trapped ions

November 25, 2011
Author(s)
Dietrich G. Leibfried, Roman Schmied , Janus H. Wesenberg
… to the dipole-dipole interaction between the trapped ions, and are mediated by motion driven by state-dependent … an optimized surface-electrode geometry for trapping ions in the desired honeycomb lattice of Kitaev's model, … simulation of the hexagonal Kitaev model with trapped ions …

Effectiveness of AlN Encapsulate in Annealing Ion-Implanted SiC

July 1, 1999
Author(s)
E Handy, M V. Rao, K A. Jones, M A. Derenge, P Chi, R D. Vispute, T Venkatesan, N A. Papanicolaou, J Mittereder
… arsenic (As), antimony (Sb), aluminum (Al), and boron (B) ion-implanted 6H-SiC. Atomic force microscopy (AFM) has … for annealing cycles up to 1600 C for 15 min. Secondary ion mass spectrometry measurements indicated that the AlN … AFM, AlN encapsulate, diffusion, ion implantation, silicon carbide, SIMS …

Demonstration of a dressed-state phase gate for trapped ions

June 28, 2013
Author(s)
Ting Rei Tan, John P. Gaebler, Ryan S. Bowler, Yiheng Lin, John D. Jost, Dietrich G. Leibfried, David J. Wineland
… compared to some other entangling gates with trapped ions. We achieve a Bell state fidelity of 0.974(4) and … dynamical decoupling, trapped ions, quantum information processing, quantum entangling gate … Demonstration of a dressed-state phase gate for trapped ions …

Interphase Formation Versus Fluoride-ion Insertion in Tunnel-Structured Transition Metal Antimonites

November 6, 2024
Author(s)
Cherno Jaye, Conan Weiland, Daniel Fischer, Alice R. Giem, Jaime R. Ayala, Sarbajit Banerjee
… are used to model interfacial reactions in fluoride-ion batteries. Topochemical F-ion insertion is evidenced for one-dimensional (1D) … F-ion batteries, energy, 1D tunnels, XRD, SEM, XANES, HAXPES … Interphase Formation Versus Fluoride-ion Insertion in Tunnel-Structured Transition Metal …

Systematic uncertainty due to background-gas collisions in trapped-ion optical clocks

September 30, 2019
Author(s)
Aaron M. Hankin, Ethan Clements, Huang Yao, Samuel M. Brewer, Jwo-Sy Chen, Chin-wen Chou, David Hume, David Leibrandt
… calculating the frequency shift and uncertainty of trapped-ion optical atomic clocks caused by background-gas … rate of collisions that cause reordering of mixed-species ion pairs. … uncertainty due to background-gas collisions in trapped-ion optical clocks …

100-Fold Reduction of Electric-Field Noise in an Ion Trap Cleanded with In Situ Argon-Ion-Beam Bombardment

September 7, 2012
Author(s)
Dustin Hite, Yves Colombe, Andrew C. Wilson, Kenton R. Brown, Ulrich J. Warring, Robert Jordens, John D. Jost, David P. Pappas, Dietrich Leibfried, David J. Wineland, Kyle McKay
… an in situ Ar + - beam cleaning procedure, and measuring ion heating rates before and after cleaning the trap … 100-Fold Reduction of Electric-Field Noise in an Ion Trap Cleanded with In Situ Argon-Ion-Beam Bombardment …

Steady-state spin synchronization through the collective motion of trapped ions

March 22, 2017
Author(s)
Athreya Shankar, John Cooper, Justin G. Bohnet, Murray Holland, John Bollinger
… We design a system with a primary and secondary species of ions that share a common set of normal modes of vibration. In … by sympathetic cooling with the secondary species of ions, to mediate spin synchronization in the primary species of ions. Our numerical study shows that spin-spin correlations …

Chain and Ion Dynamics in Precise Polyethylene Ionomers

October 11, 2019
Author(s)
Christopher L. Soles, Amalie Frischknecht, Benjamin Paren, Robert Middleton, Karen Winey, Jason Koski, Madhu Sudan Tyagi, Jacob Daniel Tarver
… sufficiently fast to observe the early stages of lithium ion motion and ionic aggregate rearrangements. In the … ionomers with isolated ionic aggregates, the Li-ion containing aggregates rearrange by a process of merging … polyelectrolyte, ionomer, ion transport, neutron scattering, energy storage, molecular …

Microwave quantum logic gates for trapped ions

August 11, 2011
Author(s)
Dietrich G. Leibfried, Christian Ospelkaus, Ulrich J. Warring, Yves Colombe, Kenton R. Brown, J. M. Amini, David J. Wineland
… processing, simulation and chemistry. For trapped atomic ions, the quantized motional and internal degrees of freedom … coherently manipulate the internal quantum states of the ions on time scales of 20 ns. We also generate entanglement … microwave control, quantum information processing, trapped ions …

yocto-Newton force detection sensitivity using trapped ions

August 22, 2010
Author(s)
Michael J. Biercuk, Joseph W. Britton, Hermann Uys, Aaron Vandevender, John Bollinger
… small external forces. In a host of formats trapped atomic ions have been proposed as ideal candidates for the detection … as small as 174 yN (yocto = 10 -24 ) using a crystal of 60 ions. Force detection sensitivity using this crystal is … yocto-Newton force detection sensitivity using trapped ions …
Displaying 326 - 350 of 2768
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