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List of atomic clocks

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

Name Operation date Type Accuracy Location Image
CS1[1] 1969 Cs 7×10−15
CS2[2] 1985 Cs 1.2×10−14
CS3 1988 Cs
CS4 1992-2005 Cs
CSF1[3] 1999 Cs fountain 4×10−16
CSF2[4] 2009 Cs fountain 2×10−16
FOCS
NPL-CsF2, Yb+ and Sr+ ion clocks, Sr lattice clock, 4 hydrogen masers[5][6]
NIST-F1,[7] Cs fountain 3.1×10−16
NIST-F2[9] Cs fountain 1.1×10−16
USNO Alternate Master Clock
WWV
Department of Defense master clock
18 cesium atomic clocks and 4 hydrogen maser clocks Cs, H
Optical lattice clock
NMIJ-F1, NMIJ-F2[16] Cs fountain 4.7×10−16
Optical clock[17] 2012 Ca ion
Caesium Beam Atomic Clock[18][19] Cs
9 Agilent 5071A caesium clocks[21] Cs 5×10−13
KRISS-1[23][24] Cs 1×10−14
Caesium atomic clocks[25] Cs
Five caesium clocks, one passive hydrogen maser, two active hydrogen masers.[26] Cs, H
DOST-PAGASA Juan Time[27]
Caesium clocks, Hydrogen Maser [28] Cs
SOC: Space Optical Clock breadboard (Sr lattice clock)[29] Sr lattice
Deep Space Atomic Clock[30] 2019-2021 Hg ion
Caesium atomic clocks[31] Cs

References

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  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. ^ "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.
  3. ^ "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.
  4. ^ "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.
  5. ^ Palmer, Jason. "UK's atomic clock 'is world's most accurate'". BBC. Retrieved 2013-03-02.
  6. ^ "Research - Time and Frequency". Retrieved 2015-06-12.
  7. ^ "A Brief History of Atomic Clocks at NIST". The National Institute of Standards and Technology (NIST). Retrieved 2013-02-04.
  8. ^ 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.
  9. ^ "NIST Launches a New U.S. Time Standard: NIST-F2 Atomic Clock". The National Institute of Standards and Technology (NIST). Retrieved 2016-02-09.
  10. ^ 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.
  11. ^ "U.S. Naval Observatory Alternate Master Clock". U.S. Navy. Retrieved 2013-02-09.
  12. ^ "Larimer County station helps set clocks". Fort Collins Coloradoan. Gannett Company. July 24, 2015. Retrieved August 27, 2018.
  13. ^ "Mission of Japan Standard Time Group - Generation of Japan Standard Time (JST)". National Institute of Information and Communications Technology. Retrieved 2013-03-05.
  14. ^ Motal, Julius (2011-08-30). "Japanese atomic clock is accurate to a 100 quadrillionth of a second". Geek.com. Ziff Davis, Inc. Archived from the original on 2012-06-14. Retrieved 2013-03-02.
  15. ^ "Quantum Metrology Laboratory". RIKEN Advanced Science Institute. Archived from the original on 2013-03-03. Retrieved 2013-03-05.
  16. ^ 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
  17. ^ 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.
  18. ^ "Caesium Beam Atomic Clock". The Government of the Hong Kong Special Administrative Region. Retrieved 2013-02-14.
  19. ^ "History of Hong Kong Time Service". The Government of the Hong Kong Special Administrative Region. Retrieved 2013-02-11.
  20. ^ "Contact us". The Government of the Hong Kong Special Administrative Region. Retrieved 2013-02-11.
  21. ^ "Clocks and Time scales". National Time and Frequency Standard Laboratory. Retrieved 2013-02-14.
  22. ^ "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.
  23. ^ "Development of Korea's First Primary Frequency Standard, 'KRISS-1'" (PDF). KRISS. Retrieved 2013-03-01.
  24. ^ 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.
  25. ^ "About SST". National Metrology Centre. Archived from the original on 2013-04-18. Retrieved 2013-03-01.
  26. ^ "Time and Frequency Metrology". CSIR-National Physical Laboratory. CSIR-National Physical Laboratory. Retrieved 2023-03-25.
  27. ^ "With PST, "Filipino time" is now "on time"". Department of Science and Technology. Retrieved 2014-06-07.
  28. ^ "Time Standard". Indonesian Institute of Sciences. Archived from the original on 2016-01-21. Retrieved 2016-06-22.
  29. ^ "Space Optical Clock". Institut für Experimentalphysik, Heinrich-Heine-Universität Düsseldorf. Retrieved 2017-01-30.
  30. ^ "Deep Space Atomic Clock". NASA's Jet Propulsion Laboratory. NASA. 27 April 2015. Retrieved 2015-10-28.
  31. ^ "Uruchomiono najdokładniejszy zegar atomowy w Polsce. Nie straci nawet sekundy przez 200 mln lat". wyborcza.pl. Retrieved 2018-03-24.
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