List of atomic clocks

This is a list of some experimental laboratory atomic clocks worldwide.

This list is incomplete; you can help by expanding it.
Image Name Location
CS1, CS2, CSF1, CSF2[1]
FOCS
NPL-CsF2, Yb+ and Sr+ ion clocks, Sr lattice clock, 4 hydrogen masers [2][3]
NIST-F1[4], NIST-F2[5]
USNO Alternate Master Clock
WWV
Department of Defense master clock
18 cesium atomic clocks and 4 hydrogen maser clocks
Optical lattice clock
NMIJ-F1, NMIJ-F2[12]
Optical clock[13]
Caesium Beam Atomic Clock[14][15]
9 Agilent 5071A caesium clocks[17]
  • National Standard Time and Frequency Laboratory
  • Taoyuan, Taiwan[18]
KRISS-1[19][20]
Caesium atomic clocks[21]
NPL clock 1, 2, 3, 4 and 5[22]
DOST-PAGASA Juan Time[23]
Caesium clocks, Hydrogen Maser [24]

SOC: Space Optical Clock breadboard (Sr lattice clock)[25]
Deep Space Atomic Clock[26]
Caesium atomic clocks[27]

References
  1. "Seit wann läuft die erste Atomuhr in der PTB?". Themenrundgänge / Fragen zur Zeit. Physikalisch-Technische Bundesanstalt. Archived from the original on 2012-11-27. Retrieved 2013-02-04.
  2. Palmer, Jason. "UK's atomic clock 'is world's most accurate'". BBC. Retrieved 2013-03-02.
  3. "Research - Time and Frequency". Retrieved 2015-06-12.
  4. "A Brief History of Atomic Clocks at NIST". The National Institute of Standards and Technology (NIST). Retrieved 2013-02-04.
  5. "NIST Launches a New U.S. Time Standard: NIST-F2 Atomic Clock". The National Institute of Standards and Technology (NIST). Retrieved 2016-02-09.
  6. Newman, Michael E. (1999-12-29). "NIST-F1 Cesium Fountain Clock". NIST News. The National Institute of Standards and Technology (NIST). Retrieved 2013-02-04.
  7. "U.S. Naval Observatory Alternate Master Clock". U.S. Navy. Retrieved 2013-02-09.
  8. "Larimer County station helps set clocks". Fort Collins Coloradoan. Gannett Company. July 24, 2015. Retrieved August 27, 2018.
  9. "Mission of Japan Standard Time Group - Generation of Japan Standard Time (JST)". National Institute of Information and Communications Technology. Retrieved 2013-03-05.
  10. Motal, Julius (2011-08-30). "Japanese atomic clock is accurate to a 100 quadrillionth of a second". Geek.com. Ziff Davis, Inc. Retrieved 2013-03-02.
  11. "Quantum Metrology Laboratory". RIKEN Advanced Science Institute. Archived from the original on 2013-03-03. Retrieved 2013-03-05.
  12. Takamizawa, A.; Yanagimachi, S.; Shirakawa, Y.; Watabe, K.; Hagimoto, K.; Ikegami, T., "Cesium Atomic Fountain Clocks at NMIJ" (PDF), Precise Time and Time Interval Systems and Applications Meeting, pp. 321–328, archived from the original (PDF) on 2011-04-28
  13. Wang, Yuanyuan (2012-07-12). "China unveils first optical clock". English News. Xinhuanet. Archived from the original on 2012-07-15. Retrieved 2013-02-04.
  14. "Caesium Beam Atomic Clock". The Government of the Hong Kong Special Administrative Region. Retrieved 2013-02-14.
  15. "History of Hong Kong Time Service". The Government of the Hong Kong Special Administrative Region. Retrieved 2013-02-11.
  16. "Contact us". The Government of the Hong Kong Special Administrative Region. Retrieved 2013-02-11.
  17. "Clocks and Time scales". National Time and Frequency Standard Laboratory. Retrieved 2013-02-14.
  18. "Current activities of the National Standard Time and Frequency Laboratory of the Telecommunication Laboratories" (PDF). Archived from the original (PDF) on 2013-02-17. Retrieved 2013-02-14.
  19. "Development of Korea's First Primary Frequency Standard, 'KRISS-1'" (PDF). KRISS. Retrieved 2013-03-01.
  20. Lee, Ho Seong; Kwon, Taeg Yong; Park, Sang Eon; Choi, Sang-Kyung; Park, Young-Ho (August 2004). "Research on Cesium Atomic Clocks at the Korea Research Institute of Standards and Science". Journal of the Korean Physical Society. 45 (2): 256–272. Archived from the original on 2016-03-04. Retrieved 2013-03-06.
  21. "About SST". National Metrology Centre. Archived from the original on 2013-04-18. Retrieved 2013-03-01.
  22. Shoba, V (2008-12-28). "Why time will stop". The Indian Express. The Indian Express ltd. Retrieved 2013-02-04.
  23. "With PST, "Filipino time" is now "on time"". Department of Science and Technology. Retrieved 2014-06-07.
  24. "Time Standard". Indonesian Institute of Sciences. Archived from the original on 2016-01-21. Retrieved 2016-06-22.
  25. "Space Optical Clock". Institut für Experimentalphysik, Heinrich-Heine-Universität Düsseldorf. Retrieved 2017-01-30.
  26. "Deep Space Atomic Clock". NASA's Jet Propulsion Laboratory. NASA. 27 April 2015. Retrieved 2015-10-28.
  27. "Uruchomiono najdokładniejszy zegar atomowy w Polsce. Nie straci nawet sekundy przez 200 mln lat". wyborcza.pl. Retrieved 2018-03-24.
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