Direct comparison of a Ca+ single ion clock against a Sr optical lattice clock
Direct comparison of a Ca+ single ion clock against a Sr optical lattice clock
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DOI:
10.1364/oe.20.022034
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发表时间:
2012-08
期刊:
影响因子:
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通讯作者:
K. Matsubara;H. Hachisu;Ying Li;S. Nagano;C. Locke;A. Nogami;M. Kajita;K. Hayasaka;T. Ido;M. Hosokawa
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文献类型:
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作者:
K. Matsubara;H. Hachisu;Ying Li;S. Nagano;C. Locke;A. Nogami;M. Kajita;K. Hayasaka;T. Ido;M. Hosokawa
Optical frequency comparison of the Ca clock transition Ca (S1/2-D5/2, 729nm) against the Sr optical lattice clock transition Sr (S0P0, 698nm) has resulted in a frequency ratio Ca / Sr = 0.957 631 202 358 049 9(2 3). The rapid nature of optical comparison allowed the statistical uncertainty of frequency ratio Ca / Sr to reach 1×10 in only 1000s and yielded a value consistent with that calculated from separate absolute frequency measurements of Ca using the International Atomic Time (TAI) link. The total uncertainty of the frequency ratio using optical comparison (free from microwave link uncertainties) is smaller than that obtained using absolute frequency measurement, demonstrating the advantage of optical frequency evaluation. We report the absolute frequency of Ca with a systematic uncertainty 14 times smaller than our previous measurement [1]. References and links 1. K. Matsubara, K. Hayasaka, Y. Li, H. Ito, S. Nagano, M. Kajita, and M. Hosokawa, “Frequency measurement of the optical clock transition of Ca ions with an uncertainty of 10 level”, Appl. Phys. Express, 1, 067011 (2008). 2. J. Guéna, M.Abgrall, D.Rovera, P.Laurent, B.Chupin, M.Lours, G.Santarelli, P.Rosenbusch, M.E. Tobar, R.Li, K.Gibble, A.Clairon, and S. Bize, “Progress in atomic fountains at LNE-SYRTE”, arXiv:1204.3621v1 (2012). 3. C.W. Chou, D. B. Hume, J. C. J. Koelemeij, D. J. Wineland, and T. Rosenband, “Frequency comparison of two high-accuracy Al optical clocks”, Phys. Rev. Lett. 104, 070802 (2010). 4. P. A. Williams, W. C. Swann, N. R. Newbury, “High-stability transfer of an optical frequency over long fiber-optic links”, J. Opt. Soc. Am. B, 25, 1284-1293 (2008). 5. K. Predehl, G. Grosche, S. M. F. Raupach, S. Droste, O. Terra, J. Alnis, Th. Legero, T. W. Hänsch, Th. Udem, R. Holzwarth, H. Schnatz, “A 920-kilometer optical fiber link for frequency metrology at the 19th decimal place”, Science 336, 441-444 (2012). 6. A. Yamaguchi, M. Fujieda, M. Kumagai, H. Hachisu, S. Nagano, Y. Li, T. Ido, T. Takano, M. Takamoto, and H. Katori, “Direct comparison of distant optical lattice clocks at the 10 uncertainty”, Appl. Phys. Express 4, 802203 (2011). 7. M. Fujieda, M. Kumagai, S. Nagano, A. Yamaguchi, H. Hachisu, and T. Ido, “All-optical link for direct comparison of distant optical clocks” Opt. Express 19, 16498 (2011). 8. T. Rosenband, D. B. Hume, P. O. Schmidt, C. W. Chou, A. Brusch, L. Lorini, W. H. Oskay, R. E. Drullinger, T. M. Fortier, J. E. Stalnaker, S. A. Diddams, W. C. Swann, N. R. Newbury, W. M. Itano, D. J. Wineland and J. C. Bergquist, “Frequency ratio of Al and Hg single-ion optical clocks; Metrology at the 17th decimal place”, Science 319, 1808-1812 (2008). 9. M. Takamoto, F.-L. Hong, R. Higashi, H. Katori, “An optical lattice clock”, Nature 435, 321-324 (2005). 10. G. K. Campbell, A. D. Ludlow, S. Blatt, J. W. Thomsen, M. J. Martin, M. H. G. de Miranda, T. Zelevinsky, M. M. Boyd, J. Ye, S. A. Diddams, T. P. Heavner, T. E. Parker, and S. R. Jefferts, “The absolute frequency of the Sr optical clock transition”, Metrologia, 45 539-548 (2008). 11. X. Baillard, M. Fouche, R. Le Targat, P. G. Westergaard, A. Lecallier, F. Chapelet, M. Abgrall, G.D. Rovera, P. Laurent, P. Rosenbusch, S. Bize, G. Santarelli, A. Clairon, P. Lemonde, G. Grosche, B. Lipphardt, and H. Schnatz, Eur. Phys. J. D, 48, 11-17 (2008). 12. St. Falke, H. Schnatz, J. S. R. Vellore Winfred, Th. Middelmann, St. Vogt, S. Weyers, B. Lipphardt, G. Grosche, F. Riehle, U. Sterr and Ch. Lisdat, “The Sr optical frequency standard at PTB”, Metrologia, 48 399-407 (2011). 13. A. Yamaguchi, N. Shiga, S. Nagano, Y. Li, H. Ishijima, H. Hachisu, M. Kumagai, and T. Ido, “Stability transfer between two clock lasers operating at different wavelengths for absolute frequency measurement of clock transition in Sr”, Appl. Phys. Express 5, 022701 (2012). 14. M. Chwalla, J. Benhelm, K. Kim, G. Kirchmair, T. Monz, M. Riebe, P. Schindler, A. S. Villar, W. Hänsel, C. F. Roos, R. Blatt, M. Abgrall, G. Santarelli, G. D. Rovera, and Ph. Laurent, “Absolute frequency measurement of the Ca 4s S1/2-3d D5/2 clock transition” Phys. Rev. Lett. 102, 023002 (2009). 15. Y. Huang, J. Cao, P. Liu, K. Liang, B. Ou, H. Guan, X. Huang, T. Li, and K. Gao, “Hertz-level measurement of the Ca 4s S1/2–3d D5/2 clock transition frequency with respect to the SI second through the Global Positioning System”, Phys. Rev. A 85, 030503(R) (2012). 16. P. O. Schmidt, T. Rosenband, C. Langer, W. M. Itano, J. C. Bergquist, and D. J. Wineland, "Spectroscopy using quantum logic," Science 309, 749-752 (2005). 17. J. Wübbena, S. Amairi, O. Mandel, and P.O. Schmidt, “Sympathetic cooling of mixed-species two-ion crystals for precision spectroscopy”, Phys. Rev. A, 85, 043412 (2012). 18. T. Rosenband, P. O. Schmidt, D. B. Hume, W. M. Itano, T. M. Fortier, J. E. Stalnaker, K. Kim, S. A. Diddams, J. C. J. Koelemeij, J. C. Bergquist, and D. J. Wineland, “Observation of the S0→P0 clock transition in Al”, Phys. Rev. Lett. 98, 220801 (2007). 19. Y. Li, S. Nagano, K. Matsubara, H. Ito, M. Kajita, and M. Hosokawa, “Narrow-line and frequency tunable diode laser system for S–D transition of Ca ions”, Jpn. J. Appl. Phys. 47 6327 (2008). 20. L-S. Ma, P. Junger, J. Ye, and J. L. Hall, “Delivering the same optical frequency at two places: accurate cancellation of phase noise introduced by an optical fiber or other time-varying path”, Opt. Lett. 19 17771779 (1994). 21. B. Arora, M. S. Safronova, and C. W. Clark, “Blackbody-radiation shift in a Ca ion optical frequency standard”, Phys. Rev. A 76, 064501 (2007) 22. G.P. Barwood, H.S. Margolis, G. Huang, P. Gill, and H.A. Klein, "Measurement of the electric quadrupole moment of the 4d D5/2 level in Sr", Phys. Rev. Lett. 93, 133001 (2004). 23. H. S. Margolis, G. P. Barwood, G. Huang, H. A. Klein, S. N. Lea, K. Szymaniec, and P. Gill ”Hertz-level measurement of the optical clock frequency in a single Sr ion”, Science 306, 1355-1358 (2004). 24. C. Degenhardt, T. Nazarova, C. Lisdat, H. Stoehr, U. Sterr, F. Riehle, “Influence of chirped excitation pulses in an optical clock with ultracold calcium atoms”, IEEE Trans. Inst. Meas. 54, 771-775 (2005). 25. S. Nagano, H. Ito, Y. Li, K. Matsubara, and M. Hosokawa, “Stable operation of femtosecond laser frequency combs with uncertainty at the 10 level toward optical frequency standards”, Jpn. J. Appl. Phys. 48 042301 (2009). 26. F. Nakagawa, M. Imae, Y. Hanado, and M. Aida, “Development of multichannel dual-mixer time difference system to generate UTC(NICT)”, IEEE Trans. Instrum. Meas. 54, 829 (2005). 27. F. –L. Hong, M. Musha, M. Takamoto, H. Inaba, S. Yanagimachi, A. Takamizawa, K. Watabe, T. Ikegami, M. Imae, Y. Fujii, M. Amemiya, K. Nakagawa, K. Ueda, and H. Katori, “Measuring the frequency of a Sr optical lattice clock using a 120 km coherent optical transfer”, Opt. Lett. 34 692 (2009). 28. CIPM recommendation (C2-2009), updates to the list of standard frequencies http://www.bipm.org/cc/CIPM/Allowed/98/REC_CIPM2009_C2_LIST_OF_ST_FREQUENCIES_18_DE C_2009.pdf 29. K. Hayasaka, "Synthesis of two-species ion chains for a new optical frequency standard with an indium ion", Appl. Phys. B 107, 965 (2012).