A team of researchers has developed a novel method for using cholesteric liquid crystals in optical microcavities. The ...

Cesium atomic clocks are really, really good— the best of them have an uncertainty of around a part in 10 16, which is to say when it measures one second, that’s 1.0000000000000000+/-0. ...

Laser-cooled atoms are trapped in the optical lattice, and the clock transition frequency is measured with high precision in a low-temperature blackbody radiation shield. view more Credit ...

"Many recent atomic clocks, ours included, use an 'optical' transition, where the frequency of the oscillation is similar to the frequency of visible light," Aeppli explained.

Optical lattices have emerged as a powerful tool to study such many-body quantum systems. Here, two counter-propagating laser beams overlap to create a standing wave. Extending this into two ...

An optical lattice is essentially an artificial crystal of light – a periodic intensity pattern that is formed by the interference of two or more laser beams. The simplest optical lattice consists of ...

Atomic-scale spin-optical laser: New horizon of optoelectronic devices. ScienceDaily . Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2023 / 09 / 230905125037.htm ...

This week, a paper s put forth an alternative method of standardizing the second, one which reduces the variability between clocks, and has implications for increasingly precise experiments.

The next generation of atomic clocks “ticks” at the frequency of a laser. That is around 100,000 times faster than the microwave frequencies of the caesium clocks that currently generate the second.

In optical lattice clocks, the oscillator is comprised of an ultra-stable laser, while the counter is a so-called frequency comb (i.e., an instrument to measure optical frequencies by recording ...