Search results for atomic clock

Other Jan 23, 2024

'Doomsday Clock' remains at 90 seconds to midnight

The symbolic "Doomsday Clock" was held at 90 seconds to midnight Tuesday, reflecting existential threats to humanity posed by potential nuclear escalation from the war in Ukraine and the multiplying impacts of the climate ...

Astronomy Jan 20, 2024

Black hole, neutron star or something new? We discovered an object that defies explanation

Sometimes astronomers come across objects in the sky that we can't easily explain. In our new research, published in Science, we report such a discovery, which is likely to spark discussion and speculation.

Quantum Physics Jan 17, 2024

Scientists build mass-producible miniature quantum memory element

Researchers at the University of Basel have built a quantum memory element based on atoms in a tiny glass cell. In the future, such quantum memories could be mass-produced on a wafer.

Quantum Physics Jan 15, 2024

The tale of two clocks: Advancing the precision of timekeeping

Historically, JILA (a joint institute established by the National Institute of Standards and Technology [NIST] and the University of Colorado Boulder) has been a world leader in precision timekeeping using optical atomic ...

Optics & Photonics Jan 15, 2024

Researchers present simplified, improved scheme for precision measurement using lasers

Within atomic and laser physics communities, scientist John "Jan" Hall has become a key figure in the history of laser frequency stabilization and precision measurement using lasers. Hall's work revolved around understanding ...

General Physics Jan 11, 2024

Image: Micro-world within an atomic clock

What looks like an aerial shot of an alien landscape is actually a scanning electron microscope view of a test glass surface, acquired as part of a project to improve the lifetime of spaceborne atomic clocks, found at the ...

Optics & Photonics Dec 8, 2023

A micro-ring resonator with big potential: Hybrid device significantly improves laser technology

The team at EPFL's Photonic Systems Laboratory (PHOSL) has developed a chip-scale laser source that enhances the performance of semiconductor lasers while enabling the generation of shorter wavelengths.

Optics & Photonics Nov 30, 2023

Study finds more stable clocks could measure quantum phenomena, including the presence of dark matter

The practice of keeping time hinges on stable oscillations. In a grandfather clock, the length of a second is marked by a single swing of the pendulum. In a digital watch, the vibrations of a quartz crystal mark much smaller ...

Optics & Photonics Nov 28, 2023

Do the bump: Scientists perfect miniaturized technique to generate precise wavelengths of visible laser light

In research, sometimes the bumpy path proves to be the best one. By creating tiny, periodic bumps in a miniature racetrack for light, researchers at the National Institute of Standards and Technology (NIST) and their colleagues ...

Space Exploration Nov 28, 2023

If warp drives are impossible, maybe faster-than-light communication is still on the table?

I'm sure many readers of Universe Today are, like me, fans of the science fiction genre. From the light sabers of "Star Wars" to the neuralyzer of "Men in Black," science fiction has crazy inventions aplenty and once science ...

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