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optical clock News
Self-Emergent Microcombs Flip Switch for Precision Timekeeping
GLASGOW, Scotland, Aug. 16, 2022 — Researchers from the universities of Strathclyde, Loughborough, and Sussex have demonstrated how optical clocks can be reliably switched on and made to keep running. The collaborators’ work resolves what had emerged as a persistent problem in...
Ultracold Ions Tune Atomic Clockwork
BRAUNSCHWEIG, Germany, Dec. 30, 2021 — Researchers at the QUEST Institute at the Physikalisch-Technische Bundesanstalt (PTB) have cooled charged ions down to 200 μK. The team combined methods — its established laser cooling of coupled ions method, and those from quantum...
Navy Research Contracts Vescent to Develop Portable Atomic Clocks
GOLDEN, Colo., Dec. 21, 2021 — Vescent Photonics signed a $16.2 million development program with the Office of Navy Research (ONR) in response to an ONR Broad Area Announcement. Under the three-phase, five-year Compact Rubidium Optical Clock (CROC) Program, Vescent will design,...
Optical Clock Uses Laser Tweezers to Manipulate Atoms
BOULDER, Colo., Sept. 20, 2019 — JILA physicists have demonstrated a new atomic clock design that uses laser tweezers to trap, control, and isolate atoms. The tweezers are created by an IR laser beam aimed through a microscope. The beam is deflected to create 10 spots of light for...
Optical Clocks Contribute to Steering International Atomic Time
TOKYO, March 7, 2019 — Optical clocks, which have seen rapid progress in the last 20 years, have evaluated the “one second” tick of International Atomic Time (TAI). The resulting data was provided to the Bureau International des Poids et Mesures (BIPM), which used the...
Frequency-Stable Laser Enhances Optical Satellite Navigation
BERLIN, June 19, 2018 — Scientists report that an active optical frequency reference based on molecular iodine was successfully tested for the first time in space. Results of the JOKARUS experiment (German acronym for iodine comb resonator under weightlessness) could be a...
Menlo Launches Optical Clock into Space
MARTINSRIED, Germany, June 15, 2018 — Menlo Systems GmbH has launched a next-generation optical clock into space for a 10-min journey. The payload consisted of two separate units, a fully automated dual comb system (FOKUS II), and an iodine-stabilized laser (JOKARUS). Iodine-based...
Spectroscopy, Microscopy Allow Precise Imaging of Optical Frequencies
BOULDER, Colo., March 6, 2018 — An imaging technique combines spectroscopy with high-resolution microscopy to produce rapid, precise measurements of quantum behavior in an atomic clock. Physicists believe the technique could improve atomic clock precision and provide a path toward...
Nobel Prize in physics recognizes quantum-world experiments
STOCKHOLM – Two independent but related quantum optics methods for measuring and manipulating individual particles while preserving their quantum mechanical nature have been recognized by the Royal Swedish Academy of Sciences with the 2012 Nobel Prize in...
Quantum optics work wins physics Nobel
STOCKHOLM – Separate but related quantum optics technologies – ions in a harmonic trap and photons in a cavity – that allow the measurement and control of individual quantum systems were recognized by the Royal Swedish Academy of Sciences with the...
Quantum Optics Work Wins Physics Nobel
STOCKHOLM, Oct. 9, 2012 — Separate but related quantum optics technologies — ions in a harmonic trap and photons in a cavity — that allow the measurement and control of individual quantum systems were recognized Tuesday by the Royal Swedish Academy of Sciences...
Optical Clock Gets New Pendulum
BRAUNSCHWEIG, Germany, March 15, 2012 — An optical clock based on ytterbium ions is so accurate that, if such a timepiece were in use since the universe began, it would now only be off by about 30 seconds.
Sound helps make a better optical clock
BRAUNSCHWEIG,Germany – Optical fibers are commonly used to transmit information and data via modulated light pulses. Now, however, three researchers at Physikalisch-Technische Bundesanstalt (PTB), working with optical frequencies rather than voice or data, are seeking to...
Quantum Logic Clock Tops Itself
BOULDER, Colo., Feb. 8, 2010 – An enhanced version of an experimental atomic clock is boasting more than twice the precision as the previous pacesetter – the original ‘quantum logic clock’ – keeping time to 1 second in 3.7 billion years.
(14 results found)
April 2024
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