[1] McGrew W F, Zhang X, Fasano R J, Schäffer S A, Beloy K, Nicolodi D, Brown R C, Hinkley N, Milani G, Schioppo M, Yoon T H and Ludlow A D 2018 Nature 564 87 [2] Oelker E, Hutson R B, Kennedy C J, Sonderhouse L, Bothwell T, Goban A, Kedar D, Sanner C, Robinson J M, Marti G E, Matei D G, Legero T, Giunta M, Holzwarth R, Riehle F, Sterr U and Ye J 2019 Nat. Photon. 13 714 [3] Lu B Q, Wang Y B, Han J X, Zhang S G, Li J G and Chang H 2017 J. Phys. Commun. 1 055017 [4] Takamoto M and Katori H 2003 Phys. Rev. Lett. 91 223001 [5] Boyd M M, Zelevinsky T, Ludlow A D, Blatt S, Zanon-willette T, Foreman S M and Ye J 2007 Phy. Rev. A 76 022510 [6] Shi C, Robyr J L, Eismann U, Zawada M, Lorini L, Le Targat R and Lodewyck J 2015 Phy. Rev. A 92 012516 [7] Lu B Q, Wang Y B, Guo Y, Xu Q F, Yin M J, Li J G and Chang H 2018 Chin. Phys. Lett. 35 043203 [8] Zhang T X, Lu B Q, Li J G, Li C B, Chang H, Shi T Y and Lu Z H 2021 J. Quant. Spectrosc. Radiat. Transfer 266 107562 [9] Ludlow A D, Zelevinsky T, Campbell G K, Blatt S, and Boyd M M, de Miranda M H G, Martin M J, Thomsen J W, Foreman S M, Ye J, Fortier T M, Stalnaker J E, Diddams S A, Le Coq Y, Barber Z W, Poli N, Lemke N D, Beck K M and Oates C W 2008 Science 319 1805 [10] Westergaard P G, Lodewyck J, Lorini L, Lecallier A, Burt E A, Zawada M, Millo J and Lemonde P 2011 Phy. Rev. Lett. 106 210801 [11] Falke St, Schnatz H, Vellore Winfred J S R, Middelmann Th, Vogt St, Weyers S, Lipphardt B, Grosche G, Riehle F, Sterr U and Lisdat Ch 2011 Metrologia 48 399 [12] Bloom B J, Nicholson T L, Williams J R, Campbell S L, Bishof M, Zhang X, Zhang W, Bromley S L and Ye J 2014 Nature 506 71 [13] Nicholson T L, Campbell S L, Hutson R B, Marti G E, Bloom B J, McNally R L, Zhang W, Barrett M D, Safronova M S, Strouse G F, Tew W L and Ye J 2015 Nat. Commun. 6 6896 [14] Bothwell T, Kedar D, Oelker E, Robinson J M, Bromley S L, Tew W L, Ye J and Kennedy C J 2019 Metrologia 56 065004 [15] Bowden W, Vianello A, Hill I R, Schioppo M and Hobson R 2020 arXiv:2010.10419v2[physics.atom-ph] [16] Li J G, Grumer J, Li W X, Andersson M, Brage T, Hutton R, Jönsson P, Yang Y and Zou Y M 2013 Phys. Rev. A 88 013416 [17] Andersson M and Jönsson P 2008 Comput. Phys. Commun. 178 156 [18] Jönsson P, Gaigalas G, Bierón J, Fischer C F and Grant I P 2013 Comput. Phys. Commun. 184 2197 [19] Andersson M and Jönsson P 2008 Comput. Phys. Commun. 178 156 [20] Li J G, Jönsson P, Godefroid M, Dong C Z and Gaigalas G 2012 Phy. Rev. A 86 052523 [21] Lu B Q, Zhang T X, Chang H, Li J G, Wu Y and Wang J G 2019 Phy. Rev. A 100 012504 [22] https://physics.nist.gov/asd [23] Taichenachev A V, Yudin V I, Oates C W, Hoyt C W, Barber Z W and Hollberg L 2006 Phys. Rev. Lett. 96 083001 [24] Baillard X, Fouché M, Targat R L, Westergaard P G, Lecallier A, Coq Y L, Rovera G D, Bize S and Lemonde P 2007 Opt. Lett. 32 1812 [25] Wang Y B, Yin M J, Ren J, Xu Q F, Lu B Q, Han J X, Guo Y and Chang H 2018 Chin. Phys. B 27 023701 [26] Lu X T, Li Ting, Kong D H, Wang Y B and Chang H 2019 Acta Phys. Sin. 68 233401 (in Chinese) [27] Blatt S, Thomsen J W, Campbell G K, Ludlow A D, Swallows M D, Martin M J, Boyd M M and Ye J 2009 Phys. Rev. A 80 052703 [28] Peik E, Schneider T and Tamm C 2005 J. Phys. B:At. Mol. Opt. Phys. 39 145 [29] Nicholson T L 2015 A new record in atomic clock performance (Ph.D. Dissertation) (Boulder:University of Colorado) [30] Yasuda M, Inaba H, Kohno T, Tanabe T, Nakajima Y, Hosaka K, Akamatsu D, Onae A, Suzuyama T, Amemiya M and Hong F L 2012 Appl. Phys. Express 5 102401 |