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] Germany Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
FOCS Switzerland Federal Institute of Metrology METAS, Bern, Switzerland
NPL-CsF2, Yb+ and Sr+ ion clocks, Sr lattice clock, 4 hydrogen masers [2][3] United Kingdom National Physical Laboratory, Teddington, London, United Kingdom
NIST-F1,[4] NIST-F2[5] United States NIST laboratories, Boulder, Colorado[6]
Department of Defense master clock United States United States Naval Observatory, Washington, D.C., United States
USNO Alternate Master Clock United States Schriever Air Force Base, Colorado, United States[7]
18 cesium atomic clocks and 4 hydrogen maser clocks Japan National Institute of Information and Communications Technology, Koganei, Tokyo, Japan[8]
Optical lattice clock Japan University of Tokyo, Tokyo, Japan[9][10]
NMIJ-F1, NMIJ-F2[11] Japan National Metrology Institute of Japan
Optical clock[12] China Hubei, People's Republic of China
Caesium Beam Atomic Clock[13][14] Hong Kong Hong Kong Observatory, Kowloon, Hong Kong[15]
9 Agilent 5071A caesium clocks[16] Taiwan National Standard Time and Frequency Laboratory, Taoyuan, Taiwan[17]
KRISS-1[18][19] South Korea Korea Research Institute of Standards and Science, Daejeon, Republic of Korea
Caesium atomic clocks[20] Singapore National Metrology Centre, Singapore
NPL clock 1, 2, 3, 4 and 5[21] India National Physical Laboratory (NPL), New Delhi, India
DOST-PAGASA Juan Time[22] Philippines Department of Science and Technology, Taguig City, Metro Manila, Philippines
Caesium clocks, Hydrogen Maser [23] Indonesia Indonesian Institute of Sciences KIM-LIPI, Puspitek, Tanggerang Selatan, Indonesia
Earth Low Earth Orbit Atomic Clock Deep Space Atomic Clock [24] United States In development at Jet Propulsion Laboratory

References

  1. ↑ "Seit wann läuft die erste Atomuhr in der PTB?". Themenrundgänge / Fragen zur Zeit. Physikalisch-Technische Bundesanstalt. 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. ↑ "Mission of Japan Standard Time Group - Generation of Japan Standard Time (JST)". National Institute of Information and Communications Technology. Retrieved 2013-03-05.
  9. ↑ 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.
  10. ↑ "Quantum Metrology Laboratory". RIKEN Advanced Science Institute. Retrieved 2013-03-05.
  11. ↑ 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
  12. ↑ Wang, Yuanyuan (2012-07-12). "China unveils first optical clock". English News. Xinhuanet. Retrieved 2013-02-04.
  13. ↑ "Caesium Beam Atomic Clock". The Government of the Hong Kong Special Administrative Region. Retrieved 2013-02-14.
  14. ↑ "History of Hong Kong Time Service". The Government of the Hong Kong Special Administrative Region. Retrieved 2013-02-11.
  15. ↑ "Contact us". The Government of the Hong Kong Special Administrative Region. Retrieved 2013-02-11.
  16. ↑ "Clocks and Time scales". National Time and Frequency Standard Laboratory. Retrieved 2013-02-14.
  17. ↑ "Current activities of the National Standard Time and Frequency Laboratory of the Telecommunication Laboratories" (PDF). Retrieved 2013-02-14.
  18. ↑ "Development of Korea's First Primary Frequency Standard, 'KRISS-1'" (PDF). KRISS. Retrieved 2013-03-01.
  19. ↑ 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. Retrieved 2013-03-06.
  20. ↑ "About SST". National Metrology Centre. Retrieved 2013-03-01.
  21. ↑ Shoba, V (2008-12-28). "Why time will stop". The Indian Express. The Indian Express ltd. Retrieved 2013-02-04.
  22. ↑ "With PST, "Filipino time" is now "on time"". Department of Science and Technology. Retrieved 2014-06-07.
  23. ↑ "Time Standard". Indonesian Institute of Sciences. Retrieved 2016-06-22.
  24. ↑ "Deep Space Atomic Clock". NASA's Jet Propulsion Laboratory. NASA. 27 April 2015. Retrieved 2015-10-28.
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