Sentence examples for an optical clock from inspiring English sources

"This has been the longstanding problem of trying to make an optical clock".

Bishof, M. et al. Resolved atomic interaction sidebands in an optical clock transition.

A recent test by the National Institute of Standards and Technology demonstrated an optical clock, running on the rare-earth metal ytterbium, that breaks every second into more than five hundred trillion intervals.

"Simply raising an optical clock by a centimetre changes its frequency," says Lobo.

Now Chin-wen Chou, Till Rosenband, and colleagues at the National Institute of Standard and Technology NISTT) in Boulder, Colorado, have detected changes in the passage of time caused by speeds of less than 10 meters per second and height changes of less than a meter, using a new type of atomic clock called an optical clock.

They implement spin orbit coupling in a 87Sr optical lattice clock using a narrow optical clock transition between two electronic states, avoiding the heating problems that plague other approaches.

A new optical clock based on aluminum ions that emit visible light is about 10 times better than the cesium clock, Dr. Wineland said, and would be off by only five seconds over the whole course of cosmic time — 13.7 billion years.

An ytterbium-based optical clock exhibits a precision of nearly one part per quintillion.

Control of the femtosecond laser repetition rate by use of the atomic fluorescence is also implemented, thus realizing a simple cesium optical clock.

In contrast to previous SOC experiments1,2,3,4,5,6,7,8,9,10,11, here the SOC is both generated and probed using a direct ultra-narrow optical clock transition between two electronic orbital states in 87Sr atoms.

Only recent advances in laser techniques have made that dream a reality, says Yu, who expects that within a few years some type of optical clock may replace the cesium microwave standard.