Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Mass Analyzers: Common Types01:19

Mass Analyzers: Common Types

The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Laser-free trapped-ion entangling gates with simultaneous insensitivity to qubit and motional decoherence.

Physical review. A·2026
Same author

Towards the optical second: verifying optical clocks at the SI limit.

Physical review. X·2024
Same author

Erratum: ^{27}Al^{+} Quantum-Logic Clock with a Systematic Uncertainty below 10^{-18} [Phys. Rev. Lett. 123, 033201 (2019)].

Physical review letters·2023
Same author

High-fidelity laser-free universal control of trapped ion qubits.

Nature·2021
Same author

Quantum Logic Spectroscopy with Ions in Thermal Motion.

Physical review. X·2021
Same author

Control and readout of a superconducting qubit using a photonic link.

Nature·2021

Related Experiment Video

Updated: Jul 14, 2026

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

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

S A Diddams1, T Udem, J C Bergquist

  • 1Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305, USA. sdiddams@boulder.nist.gov

Science (New York, N.Y.)
|July 14, 2001
PubMed
Summary

Researchers developed an all-optical atomic clock using a single trapped mercury-ion (199Hg+) for superior timekeeping. This optical atomic clock demonstrates significantly better stability than current microwave atomic clocks.

More Related Videos

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
10:42

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

Published on: May 3, 2019

In Situ Measurement of Vacuum Window Birefringence using 25Mg+ Fluorescence
07:03

In Situ Measurement of Vacuum Window Birefringence using 25Mg+ Fluorescence

Published on: June 13, 2020

Related Experiment Videos

Last Updated: Jul 14, 2026

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
10:42

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

Published on: May 3, 2019

In Situ Measurement of Vacuum Window Birefringence using 25Mg+ Fluorescence
07:03

In Situ Measurement of Vacuum Window Birefringence using 25Mg+ Fluorescence

Published on: June 13, 2020

Area of Science:

  • Atomic, Molecular, and Optical Physics
  • Metrology and Measurement Science

Background:

  • Microwave atomic clocks have been primary standards for time and frequency for 50 years.
  • Optical atomic clocks offer potential for higher stability due to their higher operating frequencies.

Purpose of the Study:

  • To demonstrate an all-optical atomic clock.
  • To achieve enhanced frequency stability beyond microwave standards.

Main Methods:

  • Utilized a single trapped 199Hg+ ion, referencing a 1.064-petahertz transition.
  • Employed a mode-locked femtosecond laser clockwork, phase-coherently locked to the optical frequency.
  • Compared performance against a laser-cooled calcium optical standard.

Main Results:

  • Achieved a fractional frequency instability upper limit of 7 x 10(-15) at 1 second averaging time.
  • Demonstrated stability substantially exceeding that of the best microwave atomic clocks.

Conclusions:

  • All-optical atomic clocks based on optical transitions offer superior stability.
  • The demonstrated 199Hg+ ion clock represents a significant advancement in precision timekeeping technology.