Search results for atomic clock

Optics & Photonics Jun 20, 2024

New photonic chip spawns nested topological frequency comb

Scientists on the hunt for compact and robust sources of multicolored laser light have generated the first topological frequency comb. Their result, which relies on a small silicon nitride chip patterned with hundreds of ...

Space Exploration Jun 12, 2024

Green light for Galileo second-generation satellite design

Production of Galileo Second Generation satellites advances at full speed after two independent Satellite Critical Design Review boards have confirmed that the satellite designs of the respective industries meet all mission ...

Condensed Matter Jun 6, 2024

Calcium oxide's quantum secret: Nearly noiseless qubits

Calcium oxide is a cheap, chalky chemical compound commonly used in the manufacturing of cement, plaster, paper, and steel. But the material may soon have a more high-tech application.

Condensed Matter May 31, 2024

On-chip GHz time crystals with semiconductor photonic devices pave way to new physics and optoelectronic applications

Researchers have for the first time observed a time crystal on a microscale semiconductor chip oscillating at a rate of several billion times per second, unveiling exceptionally high non-linear dynamics in the GHz range.

Optics & Photonics May 22, 2024

Streamlined microcomb design provides control with the flip of a switch

Light measurement devices called optical frequency combs have revolutionized metrology, spectroscopy, atomic clocks, and other applications. Yet challenges with developing frequency comb generators at a microchip scale have ...

Quantum Physics May 16, 2024

Researchers call for a new measurement of time for tunneling particles

In an amazing phenomenon of quantum physics known as tunneling, particles appear to move faster than the speed of light. However, physicists from Darmstadt believe that the time it takes for particles to tunnel has been measured ...

General Physics May 15, 2024

A new simple scheme for atom interferometry

Atom interferometers are devices that use the wave characteristics of matter to measure the phase between atomic matter waves to separate paths to make high-precision measurements of elements of physics, such as gravitational ...

Optics & Photonics May 3, 2024

Physicists create an optical tweezer array of individual polyatomic molecules for the first time

A team of physicists at Harvard University has succeeded in trapping individual polyatomic molecules in optical tweezer arrays for the first time. In their paper published in the journal Nature, the group describes how they ...

Earth Sciences May 2, 2024

A clock in the rocks: What cosmic rays tell us about Earth's changing surface and climate

How often do mountains collapse, volcanoes erupt or ice sheets melt?

Space Exploration Apr 30, 2024

Two new satellites join the Galileo constellation

The European Galileo navigation system has two more satellites in orbit following their launch in the early morning of Sunday, 28 April, at 01:34 BST/02:34 CEST. With 30 satellites now in orbit, Galileo is expanding its constellation, ...

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