Single atoms and molecules can be trapped in tightly focused beams of light that form
'optical tweezers', affording exquisite capabilities for the control and detection of individual …

BACKGROUND The generation and control of coherent electromagnetic waves, such as
those provided by electronic oscillators in the radio frequency domain or lasers in the optical …

Optical frequency combs were developed nearly two decades ago to support the world's
most precise atomic clocks. Acting as precision optical synthesizers, frequency combs …

The quest towards the integration of ultra-fast, high-precision optical clocks is reflected in the
large number of high-impact papers on the topic published in the last few years. This interest …

Laboratory optical atomic clocks achieve remarkable accuracy (now counted to 18 digits or
more), opening possibilities for exploring fundamental physics and enabling new …

Measurement of optical and vibrational spectra with high resolution provides a way to
identify chemical species in cluttered environments and is of general importance in many …

Optical-frequency synthesizers, which generate frequency-stable light from a single
microwave-frequency reference, are revolutionizing ultrafast science and metrology, but …

Numerous modern technologies are reliant on the low-phase noise and exquisite timing
stability of microwave signals. Substantial progress has been made in the field of microwave …

Frequency combs are having a broad impact on science and technology because they
provide a way to coherently link radio/microwave-rate electrical signals with optical-rate …

We report, to the best of our knowledge, the first demonstration of thermally controlled soliton
mode-locked frequency comb generation in microresonators. By controlling the electric …