Optical frequency ratio of a 171Yb+ single-ion clock and a 87Sr lattice clock

被引:38
作者
Doerscher, S. [1 ]
Huntemann, N. [1 ]
Schwarz, R. [1 ]
Lange, R. [1 ]
Benkler, E. [1 ]
Lipphardt, B. [1 ]
Sterr, U. [1 ]
Peik, E. [1 ]
Lisdat, C. [1 ]
机构
[1] Phys Tech Bundesanstalt, Bundesallee 100, D-38116 Braunschweig, Germany
基金
欧盟地平线“2020”;
关键词
optical clocks; frequency ratio; ytterbium ion clock; strontium lattice clock; YB; SR; HG;
D O I
10.1088/1681-7575/abc86f
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
We report direct measurements of the frequency ratio of the 642 THz S-2(1/2)(F=0)-2F(7/2)(F=0)-F-2(7/2)(F = 3) electric octupole transition in Yb-171(+) and the 429 THz S-1(0)-P-3(0) transition in Sr-87. A series of 107 measurements has been performed at the Physikalisch-Technische Bundesanstalt between December 2012 and October 2019. Long-term variations of the ratio are larger than expected from the individual measurement uncertainties of few 10(-17). The cause of these variations remains unknown. Even taking these into account, we find a fractional uncertainty of the frequency ratio of 2.5 x 10(-17), which improves upon previous knowledge by one order of magnitude. The average frequency ratio is nu(Yb)+/nu(Sr) = 1.495 991 618 544 900 537(38). This represents one of the most accurate measurements between two different atomic species to date.
引用
收藏
页数:8
相关论文
共 55 条
[1]   Noise and instability of an optical lattice clock [J].
Al-Masoudi, Ali ;
Doerscher, Soeren ;
Haefner, Sebastian ;
Sterr, Uwe ;
Lisdat, Christian .
PHYSICAL REVIEW A, 2015, 92 (06)
[2]   An optical lattice clock with spin-polarized 87Sr atoms [J].
Baillard, X. ;
Fouche, M. ;
Le Targat, R. ;
Westergaard, P. G. ;
Lecallier, A. ;
Chapelet, F. ;
Abgrall, M. ;
Rovera, G. D. ;
Laurent, P. ;
Rosenbusch, P. ;
Bize, S. ;
Santarelli, G. ;
Clairon, A. ;
Lemonde, P. ;
Grosche, G. ;
Lipphardt, B. ;
Schnatz, H. .
EUROPEAN PHYSICAL JOURNAL D, 2008, 48 (01) :11-17
[3]  
Beloy K, 2020, ARXIV200514694PHYSIC
[4]   Coherent population transfer among quantum states of atoms and molecules [J].
Bergmann, K ;
Theuer, H ;
Shore, BW .
REVIEWS OF MODERN PHYSICS, 1998, 70 (03) :1003-1025
[5]   The unit of time: Present and future directions [J].
Bize, Sebastien .
COMPTES RENDUS PHYSIQUE, 2019, 20 (1-2) :153-168
[6]   JILA SrI optical lattice clock with uncertainty of 2.0 x 10-18 [J].
Bothwell, Tobias ;
Kedar, Dhruv ;
Oelker, Eric ;
Robinson, John M. ;
Bromley, Sarah L. ;
Tew, Weston L. ;
Ye, Jun ;
Kennedy, Colin J. .
METROLOGIA, 2019, 56 (06)
[7]   27Al+ Quantum-Logic Clock with a Systematic Uncertainty below 10-18 [J].
Brewer, S. M. ;
Chen, J-S ;
Hankin, A. M. ;
Clements, E. R. ;
Chou, C. W. ;
Wineland, D. J. ;
Hume, D. B. ;
Leibrandt, D. R. .
PHYSICAL REVIEW LETTERS, 2019, 123 (03)
[8]  
Bureau International des Poids et Mesures, 2019, SYST INT UN, V9th
[9]   A compact, transportable single-ion optical clock with 7.8 x 10-17 systematic uncertainty [J].
Cao, J. ;
Zhang, P. ;
Shang, J. ;
Cui, K. ;
Yuan, J. ;
Chao, S. ;
Wang, S. ;
Shu, H. ;
Huang, X. .
APPLIED PHYSICS B-LASERS AND OPTICS, 2017, 123 (04)
[10]  
Consultative Committee for Time and Frequency (CCTF), 2004, REP 16 M 1 2 APR