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Displaying 126 - 150 of 4632

Phase-coherent sensing of the center-of-mass motion of trapped-ion crystals

November 9, 2020
Author(s)
Matthew Affolter, Kevin Gilmore, Elena Jordan, John Bollinger
… Measurements of the center-of-mass motion of a trapped-ion crystal that are phase- coherent with an external force … far from the trap motional frequency on a two-dimensional trapped ion crystal of approximately 100 ions, and determine … Phase-coherent sensing of the center-of-mass motion of trapped-ion crystals …

"Perpendicular laser cooling with a rotating wall potential in a Penning trap"

April 26, 2016
Author(s)
Joseph W. Britton, Justin G. Bohnet, John Bollinger, Steven B. Torrisi
… potential on perpendicular laser cooling in a Penning ion trap. By including energy exchange with the rotating wall, we … cooling, laser cooling, non-neutral plasmas, Penning ion trap, rotating wall, trapped ion crystals … laser cooling with a rotating wall potential in a Penning trap" …

Ion Coulomb crystals: an exotic form of condensed matter

August 24, 2025
Author(s)
Giovanna Morigi, John Bollinger, Michael Drewsen, Daniel Podolsky, Efrat Shimshoni
… fluorescence. These unique and unusual properties make ion crystals a powerful platform for studying phases of … theoretical framework and experimental characterization of ion Coulomb crystals from a condensed-matter perspective. We … exploring novel condensed matter phenomena with trapped ion crystals, as well as their many scientific and technical …

Preparation of Dicke States in an Ion Chain

November 2, 2009
Author(s)
David Hume, Chin-Wen Chou, Till P. Rosenband, David J. Wineland
… in trapped atomic ions. We consider a linear chain of N ion qubits that is prepared in a particular Fock state of … target ions trapped simultaneously with an 27Al+ ancillary ion. … Dicke state, entanglement, laser spectroscopy, ion trap, quantum information … Preparation of Dicke States in an Ion Chain …

Inter-ion Coulomb interactions in a Magneto-Optical Trap Ion Source

May 19, 2011
Author(s)
Jabez J. McClelland, Brenton J. Knuffman, Adam V. Steele
… We have investigated the role played by inter-ion Coulomb interactions in a magneto-optical trap ion source (MOTIS). Using a Monte Carlo simulation accounting … MOTIS, ion beams, coulomb replusion … Inter-ion Coulomb interactions in a Magneto-Optical Trap Ion Source …

Phase space study of surface electrode Paul traps: Integrable, chaotic, and mixed Motion

May 31, 2018
Author(s)
V. Roberdel, Dietrich Leibfried, D. Ullmo, H. Landa
… of the motion of trapped particles in electrodynamic traps. Focusing on 5-wire surface electrode Paul traps, we study the details of integrable and chaotic motion … describing ion dynamics in a broad variety of surface Paul traps. For its experimental probing, we propose and analyze, …

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 …

Observations and identifications of extreme ultraviolet spectra of Ca-like to Na-like neodymium ions using an electron beam ion trap

August 23, 2023
Author(s)
Yang Yang, Dipti Dipti, Chihiro Suzukic, A. C. Gall, R. Silwal, Samuel Sanders, Joseph N. Tan, Aung S. Naing, Endre Takacs, Yuri Ralchenko
… Ca-like, Nd40+, through Nalike, Nd49+, highly charged ions have been measured at an electron beam ion trap (EBIT) facility at the National Institute of … EUV spectroscopy, neodymium, electron beam ion trap, collisional-radiative modeling, line identification … ultraviolet spectra of Ca-like to Na-like neodymium ions using an electron beam ion trap …

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. …

Nanoscale Focused Ion Beam from Laser-cooled Lithium Atoms

October 26, 2011
Author(s)
Brenton J. Knuffman, Adam V. Steele, Jon Orloff, Jabez J. McClelland
… To advance the capabilities of focused ion beam (FIB) technology, we have created a low-energy FIB … in a magneto-optical trap (MOT). This magneto-optical trap ion source relies on both the low temperature of the … energy spread of the resultant beam to form a nanoscale ion probe at its focus. We present examples of microscopy …

Optical Frequency Standard Using Trapped Hg + Ions

September 14, 1998
Author(s)
B C. Young, F C. Cruz, D J. Berkeland, R J. Rafac, James C. Bergquist, Wayne M. Itano, David J. Wineland
… Proc. Conf. on Trapped Charged Particles and Fundamental Physic … Conf. on Trapped Charged Particles and Fundamental Physics … Optical Frequency Standard Using Trapped Hg + Ions …

Fluorescence during Doppler cooling of a single trapped atom

November 26, 2007
Author(s)
Janus Wesenberg, Dietrich G. Leibfried, Brad R. Blakestad, Joseph W. Britton, Ryan Epstein, Jonathan Home, Wayne M. Itano, John D. Jost, Emanuel H. Knill, C. Langer, R. Ozeri, Signe Seidelin, David J. Wineland
… the temporal dynamics of Doppler cooling of a single trapped atom in the weak binding regime using a … this model allows us to estimate the initial energy of the trapped particle by observing the fluorescence rate during … also discuss the effect of RF micromotion, relevant for a trapped atomic ion, and coupling between the vibrational …

Quantum-enhanced sensing of displacements and electric fields with large trapped-ion crystals

August 6, 2021
Author(s)
Kevin Gilmore, Matthew Affolter, Judith Jordan, Diego Barberena, Robert Lewis-Swan, Ana Maria Rey, John J. Bollinger
… and electric fields using a large crystal of approx. 150 trapped ions. The center of mass vibrational mode of the … field sensing, entanglement, many body, quantum sensing, trapped ions … sensing of displacements and electric fields with large trapped-ion crystals …

Optical frequency standards based on mercury and aluminum ions

September 12, 2007
Author(s)
Wayne M. Itano, James C. Bergquist, Anders Brusch, Scott A. Diddams, Tara M. Fortier, Thomas P. Heavner, Leo W. Hollberg, David Hume, Steven R. Jefferts, Luca Lorini, Thomas E. Parker, Till P. Rosenband, Jason Stalnaker
… Optical frequency standards based on mercury and aluminum ions …

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 …

Gold Nanoparticle Quantitation by Whole Cell Tomography

November 13, 2015
Author(s)
Aric W. Sanders, Kavita M. Jeerage, Cindi Schwartz, Alexandra Curtin, Ann C. Chiaramonti Debay
… Many proposed biomedical applications for engineered gold nanoparticles require their incorporation by mammalian … in specific numbers and locations. Here, the number of gold nanoparticles inside of individual mammalian stem cells … packing volume is 2.15 ± 0.20 times the volume of the bare gold nanoparticles. …

Single-qubit-gate error below 10 -4 in a trapped ion

September 14, 2011
Author(s)
Kenton R. Brown, Andrew C. Wilson, Yves Colombe, Christian Ospeklaus, Adam M. Meier, Emanuel H. Knill, Dietrich G. Leibfried, David J. Wineland
… Single-qubit-gate error below 10 -4 in a trapped ion …
Displaying 126 - 150 of 4632
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