Time and Frequency Division
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The Time and Frequency Division, part of the NIST Physics Laboratory, maintains the standard for frequency and time interval for the United States, provides official time to the United States, and carries out a broad program of research and service activities in time and frequency metrology.
NIST's Second "Quantum Logic Clock" is World's Most Precise Clock NIST scientists have built a second "quantum logic clock," using quantum information processing techniques on a single ion of aluminum to make a clock that would not gain or lose more than one second in about 3.7 billion years. For more information, please see http://www.nist.gov/physlab/div847/logicclock_020410.cfm.  
Novel Ion Trap with Optical Fiber Could Link Atoms and Light in Quantum NetworksPhysicists at the National Institute of Standards and Technology (NIST) have demonstrated an ion trap with a built-in optical fiber that collects light emitted by single ions (electrically charged … 
Time Is Money: SIM Time Network Has Far-Reaching BenefitsClocks in the Americas and the Caribbean Islands are now ticking in unison thanks to the work of the Sistema Interamericano de Metrologia (SIM), a regional metrology organization that works to …
Good Times! Get to Know Your Radio-Controlled Clock
"How accurate is a radio-controlled clock?" National Institute of Standards and Technology (NIST) researcher Michael Lombardi asks and answers the question in a featured article of this … 
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General Information: NIST Time and Frequency Division |
