Physicists at the University of Science and Technology of China have built a strontium optical lattice clock with a systematic uncertainty of 9.2 times 10 to the negative 19th power, a level of ...

Researchers at the Ye Lab at JILA (the National Institute of Standards and Technology and the University of Colorado Boulder) and University of Delaware recently created a highly precise optical ...

Optical lattice clocks are devices that measure the passing of time via the frequency of light that is absorbed or emitted by laser-cooled atoms trapped in a repeating pattern of light interference ...

Tucked away in a vault in France is a weight made of platinum and iridium, diligently cared for by a team of highly trained specialists. Its sole purpose is to be, to sit and remain unchanging as the ...

Add Yahoo as a preferred source to see more of our stories on Google. MIT and Harvard scientists have built the world's most precise optical clock, surpassing the quantum limit with entangled atoms ...

The world's most accurate atomic clocks have a structural flaw that their precision figures never mention: they blink. Every optical lattice clock operating in every metrology laboratory on earth ...

Optical clocks represent the forefront of timekeeping and frequency metrology, exploiting ultranarrow electronic or vibrational transitions in atoms or molecules confined by optical potentials. By ...

Although today’s best optical atomic clocks can be used to make extremely precise measurements, they are still limited by the noise from the spin statistics of the many atoms they interrogate, known ...

The reconciliation of general relativity and quantum mechanics is one of the biggest challenges in science, one that continues to elude us. Now, a new study by Anjun Chu and colleagues has examined ...

Our group explores many facets of ultracold strontium (Sr), emphasizing precision measurement and quantum state engineering and manipulation of atomic states. The group has achieved exquisite ...