Researchers have shown, for the first time, that transmission of ultrastable optical signals from optical clocks across tens of kilometers of deployed multicore fiber is compatible with simultaneous ...

Researchers have shown how ultrastable optical signals from optical clocks can be transmitted across tens of kilometers of deployed multicore fiber carrying telecommunications data. Nazanin Hoghooghi, ...

A study led by the University of Oxford has identified a surprising source of entropy in quantum timekeeping—the act of measurement itself. In a study published in Physical Review Letters, scientists ...

As anticipation builds for the longer days that follow this weekend’s switch to daylight savings time, the moment seemed ideal to turn to one of the nation’s leading circadian-rhythms researchers, UC ...

Your body possesses an internal clock, the circadian rhythm, that dictates sleep and wake cycles. This biological marvel, governed by light cues and hormones like cortisol, anticipates dawn, preparing ...

The advantage of a radio-controlled clock that receives the time signal from WWVB is that you never have to set it again. Whether it’s a little digital job on your desk, or some big analog wall clock ...