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11 Current news about the topic atomic clocks

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High-precision frequency measurement

03-Aug-2021

Many scientific experiments require highly precise time measurements with the help of a clearly defined frequency. Now, a new approach allows the direct comparison of frequency measurements in the lab with the atomic clock in Bern, Switzerland. For many scientific experiments, today’s researchers ...

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Weighing an ant on top of an elephant: Quantum jump tipping the balance

Tiny change in the mass of individual atoms for the first time measured

08-May-2020

A new door to the quantum world: when an atom absorbs or releases energy via the quantum jump of an electron, it becomes heavier or lighter, according to Einstein’s theory of relativity (E = mc²). However, the effect is minuscule for a single atom. Nevertheless, the team of Klaus Blaum and Sergey ...

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Quantum logic spectroscopy unlocks potential of highly charged ions

31-Jan-2020

Scientists from the Physikalisch-Technische Bundesanstalt (PTB) and the Max Planck Institute for Nuclear Physics (MPIK) have carried out pioneering optical measurements of highly charged ions with unprecedented precision. To do this, they isolated a single Ar¹³⁺ ion from an extremely hot plasma ...

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Milestones on the Way to the Nuclear Clock

Two research teams have succeeded simultaneously in measuring the long-sought Thorium nuclear transition

13-Sep-2019

If you want to build the most accurate clock in the world, you need something that “ticks” very fast and extremely precise. In an atomic clock, electrons are used, which can be switched back and forth between two different states in a very precisely defined way. Even more precise, however, would ...

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Testing the symmetry of space-time by means of atomic clocks

The comparison of two atomic clocks has confirmed their excellent accuracy as well as a fundamental hypothesis of the theory of relativity

15-Mar-2019

In his Special Theory of Relativity, Einstein formulated the hypothesis according to which the speed of light is always the same, no matter what the conditions are. It may, however, be possible that – according to theoretical models of quantum gravitation – this uniformity of space-time does not ...

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3-D quantum gas atomic clock offers new dimensions in measurement

09-Oct-2017

JILA physicists have created an entirely new design for an atomic clock, in which strontium atoms are packed into a tiny three-dimensional (3-D) cube at 1,000 times the density of previous one-dimensional (1-D) clocks. In doing so, they are the first to harness the ultra-controlled behavior of a ...

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The most accurate optical single-ion clock worldwide

12-Feb-2016

Atomic clock experts from the Physikalisch-Technische Bundesanstalt (PTB) are the first research group in the world to have built an optical single-ion clock which attains an accuracy which had only been predicted theoretically so far. As early as 1981, Hans Dehmelt, who was to be awarded a Nobel ...

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Getting better all the time: JILA strontium atomic clock sets new records

23-Apr-2015

In another advance at the far frontiers of timekeeping by National Institute of Standards and Technology (NIST) researchers, the latest modification of a record-setting strontium atomic clock has achieved precision and stability levels that now mean the clock would neither gain nor lose one ...

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Thousands of atoms entangled with a single photon

Result could make atomic clocks more accurate

27-Mar-2015

Physicists from MIT and the University of Belgrade have developed a new technique that can successfully entangle 3,000 atoms using only a single photon. The results, published in the journal Nature, represent the largest number of particles that have ever been mutually entangled experimentally. ...

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Top-precision optical atomic clock starts ticking

04-Mar-2015

A state-of-the-art optical atomic clock, collaboratively developed by scientists from the University of Warsaw, Jagiellonian University, and Nicolaus Copernicus University, is now "ticking away" at the National Laboratory of Atomic, Molecular and Optical Physics in Torun, Poland. As the first of ...

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