[1] Bauch A, Weyers S, Piester D, Stalimuniene E and Yang W 2012 Metrologia 49 180 [2] Rosenband T, Hume D B, Schmidt P O, Chou C W, Brusch A, Lorini L, Oskay W H, Drullinger R E, Fortier T M, Stalnaker J E, Diddams S A, Swann W C, Newbury N R, Itano W M, Wineland D J and Bergquist J C 2008 Science 319 1808 [3] Wolf P, Chapelet F, Bize S and Clairon A 2006 Phys. Rev. Lett. 96 060801 [4] Dai S Y, Zheng F S, Liu K, Chen W L, Lin Y G, Li T C and Fang F 2021 Chin. Phys. B 30 013701 [5] Vian C, Rosenbusch P, Marion H, Bize S, Cacciapuoti L, Zhang S, Abgrall M, Chambon D, Maksimovic I, Laurent P, Santarelli G, Luiten S, Tobar M and Salomon C 2005 IEEE Trans. Instrum. Meas. 54 833 [6] Weyers S, Gerginov V, Kazda M, Rahm J, Lipphardt B, Dobrev G and Gibble K 2018 Metrologia 55 789 [7] Costanzo G A, Siccardi M, Barychev V and Marchi A D 2000 IEEE Trans.Ultrason. Ferroelectr. Freq. Control 47 249 [8] Yang C, Zuo G H, Tian Z Z, Zhang Y C and Zhang T C 2019 Chin. Phys. B 28 117601 [9] Walker T G and Happer W 1997 Rev. Mod. Phys. 69 629 [10] Kastler A 1957 J. Opt. Soc. Am. 47 460 [11] Vanier J and Audoin C 2005 Metrologia 42 S31 [12] Szymaniec K, Noh H R, Park S E and Takamizawa A 2013 Appl. Phys. B 111 527 [13] Szymaniec K and Park S E 2011 IEEE Trans. Instrum. Meas. 60 2475 [14] Domenico G D, Devenoges L, Dumas C and Thomann P 2010 Phys. Rev. A 82 053417 [15] Takamizawa A, Yanagimachi S, Tanabe T, Hagimoto K, Hirano I, Watabe K I, Ikegami T and Hartnett J G 2015 IEEE Trans. Instrum. Meas. 64 2504 [16] Tremblay P and Jacques C 1990 Phys. Rev. A 41 4989 [17] Fang F, Chen W L, Liu K, Liu N F, Suo R and Li T C 2015 Joint Conference of the IEEE International Frequency Control Symposium & the European Frequency and Time Forum, April 12-16, 2015 Denver, USA, pp. 492-494 [18] Fang F, Chen W L, Liu K, Liu N F, Han L and Li T C 2019 URSI Asia-pacific Radio Science Conference (AP-RASC), March 9-15, 2019 New Delhi, India, 8738417 [19] Fang F, Chen W L, Liu K, Liu N F, Dai S Y, Han L and Li T C 2017 32nd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), August 19-26, 2017 Montreal, Canada, 8105340 [20] Fang F, Chen W L, Liu K, Dai S Y, Liu N F, Han L, Zheng F S and Li T C 2019 Joint Conference of the IEEE International Frequency Control Symposium and the European Frequency and Time Forum, April 14-18, 2019 Orlando, USA, 8856067 [21] Dai S Y, Fang F, Liu K, Chen W L, Liu N F, Cao S Y and Li T C 2020 AIP Adv. 10 065118 [22] Avila G, Giordano V, Candelier V, Clercq E D, Theobald G and Cerez P 1987 Phys. Rev. A 36 3719 [23] Steck D A http://steck.us/alkalidata (revision 2.1.2, 12 August 2009) [24] Jefferts S R, Heavner T P, Shirley J and Paker T E 2002 Frequency Standards and Metrology, pp. 72-79 [25] Santarelli G, Laurent Ph, Lemonde P, Clairon A, Mann A G, Chang S, Luiten A N and Salomon C 1999 Phys. Rev. Lett. 82 4619 [26] Szymaniec K, Park S E, Marra G and Chalupczak W 2010 Metrologia 47 363 [27] Itano W M, Bergquist J C, Bollinger J J, Gilligan J M, Heinzen D J, Moore F L, Raizen M G and Wineland D J 1993 Phys. Rev. A 47 3554 [28] Wynands R and Weyers S 2005 Metrologia 42 S64 [29] Santarelli G, Audoin C, Makdissi A, Laurent Ph, Dick G J and Clairon A 1998 IEEE Trans. Ultrason. Ferroelectr. Freq. Control 45 887 |