Search filters

List of works by James Bergquist

Absolute Frequency Measurements of theHg+and Ca Optical Clock Transitions with a Femtosecond Laser

scientific article published in Physical Review Letters

Absolute frequency measurement of the neutral 40Ca optical frequency standard at 657 nm based on microkelvin atoms

Absorption spectroscopy at the limit: detection of a single atom

scientific article published on 01 June 1987

All-optical atomic clocks

An optical clock based on a single trapped 199Hg+ ion.

scientific article

Atomic ion Coulomb clusters in an ion trap

scientific article published on 01 December 1987

Coherent optical link over hundreds of metres and hundreds of terahertz with subfemtosecond timing jitter

Compact femtosecond-laser-based optical clockwork

Delivery of high-stability optical and microwave frequency standards over an optical fiber network

Design and control of femtosecond lasers for optical clocks and the synthesis of low-noise optical and microwave signals

Diode-Pumped Nd:FAP Laser at 1.126 microm: A Possible Local Oscillator for a Hg+ Optical Frequency Standard.

scientific article

Direct comparison of two cold-atom-based optical frequency standards by using a femtosecond-laser comb.

scientific article

Double-resonance and optical-pumping experiments on electromagnetically confined, laser-cooled ions

scientific article

Early observations of macroscopic quantum jumps in single atoms

Energy and radiative lifetime of the 5d96s2 2D5/2 state in Hg II by Doppler-free two-photon laser spectroscopy.

scientific article

Erratum: Quantum projection noise: Population fluctuations in two-level systems [Phys. Rev. A47, 3554 (1993)]

scientific article published on 01 February 1995

Erratum: Remeasurement of the Rydberg constant

scientific article published on 01 August 1987

FREQUENCY MEASUREMENTS OF Al+ AND Hg+ OPTICAL STANDARDS

Femtosecond-laser-based synthesis of ultrastable microwave signals from optical frequency references

scientific article published in March 2005

Frequency evaluation of the doubly forbiddenS01→P03transition in bosonicYb174

article published in 2008

Frequency ratio of Al+ and Hg+ single-ion optical clocks; metrology at the 17th decimal place

scientific article

Generation of continuous-wave 194-nm radiation by sum-frequency mixing in an external ring cavity

scientific article

Generation of ultrastable microwaves via optical frequency division

Ionic crystals in a linear Paul trap

scientific article published on 01 May 1992

Laser Cooling to the Zero-Point Energy of Motion

scientific article published in Physical Review Letters

Laser spectroscopy of trapped atomic ions

scientific article

Laser-cooling limits and single-ion spectroscopy

scientific article

Linear Trap for High-accuracy Spectroscopy of Stored Ions

Measurement of the (199)Hg+ 5d9 6s2 (2)D(5/2) electric quadrupole moment and a constraint on the quadrupole shift.

scientific article

New value for the Rydberg constant from the hydrogen Balmer- beta transition

scientific article published on 01 March 1987

Observation of Quantum Jumps in a Single Atom

scientific article published in Physical Review Letters

Observation of theS01→P03Clock Transition inAl+27

scientific article published in Physical Review Letters

Optical frequency standards and measurements

Optical frequency standards based on mercury and aluminum ions

scholarly article published 13 September 2007

Optical frequency standards based on the /sup 199/Hg/sup +/ ion

Optical frequency/wavelength references

Optical-to-microwave frequency comparison with fractional uncertainty of 10-15

Photon antibunching and sub-Poissonian statistics from quantum jumps in one and two atoms

scientific article published on 01 July 1988

Precise spectroscopy for fundamental physics

Precise test of quantum jump theory

scientific article published on 01 June 1988

Precision Atomic Spectroscopy for Improved Limits on Variation of the Fine Structure Constant and Local Position Invariance

scientific article published in Physical Review Letters

Primary Atomic Frequency Standards at NIST.

scientific article

Progress at NIST toward absolute frequency standards using stored ions

scientific article

QUANTUM CONTROL, QUANTUM INFORMATION PROCESSING, AND QUANTUM-LIMITED METROLOGY WITH TRAPPED IONS

scholarly article published December 2005

Quantum measurements of trapped ions

Quantum projection noise: Population fluctuations in two-level systems

scientific article published on 01 May 1993

Radiative decay rates in Hg+ from observations of quantum jumps in a single ion

scientific article published on 01 December 1987

Recent atomic clock comparisons at NIST

Recoilless optical absorption and Doppler sidebands of a single trapped ion

scientific article published on 01 July 1987

Remeasurement of the Rydberg constant

scientific article published on 01 December 1986

Rydberg constant and fundamental atomic physics

scientific article published on 01 March 1989

Single-Atom Optical Clock with High Accuracy

scientific article

Spectroscopy of a single Al/sup +/ ion via coupling to Be/sup +/

Spectroscopy of atomic and molecular ions using quantum logic

Spectroscopy using quantum logic

scientific article published in July 2005

Standards of time and frequency at the outset of the 21st century

scientific article

Stylus ion trap for enhanced access and sensing

scientific article published on 28 June 2009

Sub-dekahertz ultraviolet spectroscopy of 199Hg+

scientific article published on 01 September 2000

Sub-systems for optical frequency measurements: application to the 282-nm (199)Hg(+) transition and the 657-nm Ca line

scientific article

Sum-frequency generation of continuous-wave light at 194 nm

scientific article published on 01 June 1997

Sympathetic cooling of trapped ions: A laser-cooled two-species nonneutral ion plasma

scientific article published on 01 July 1986

Testing the Stability of Fundamental Constants with theHg+199Single-Ion Optical Clock

scientific article published in Physical Review Letters

The199Hg single ion optical clock: recent progress

Trapped Atomic Ions and Quantum Information Processing

Young’s interference experiment with light scattered from two atoms

scientific article published in Physical Review Letters