| Zugriffsnummer | 35459 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Single-ion atomic clock with 3×10-18 systematic uncertainty |
| Autor(in); Institution |
Huntemann, Nils; 4.4, Zeit und Frequenz, PTB-Braunschweig
Sanner, Christian; 4.4, Zeit und Frequenz, PTB-Braunschweig
Lipphardt, Burghard; 4.4, Zeit und Frequenz, PTB-Braunschweig
Tamm, Christian; 4.4, Zeit und Frequenz, PTB-Braunschweig
Peik, Ekkehard; 4.4, Zeit und Frequenz, PTB-Braunschweig
|
| Quelle/Jahr | Physical Review Letters: 116 (2016), 6, 063001-1 - 063001-5 |
| ISSN | 0031-9007 (PRINT) ; 1079-7114 (ONLINE) |
| DOI | |
| Verlag | Ridge, NY: APS |
| Freie Schlagworte | single-ion optical clocks ; single trapped 171Yb+ ion ; Ramsey ; Rabi spectroscopy |
| Zusammenfassung | We experimentally investigate an optical frequency standard based on the 2S1/2 (F =0) → 2F7/2 (F=3) electric octupole (E3 ) transition of a single trapped 171Yb+ ion. For the spectroscopy of this strongly forbidden transition, we utilize a Ramsey-type excitation scheme that provides immunity to probe-induced frequency shifts. The cancellation of these shifts is controlled by interleaved single-pulse Rabi spectroscopy, which reduces the related relative frequency uncertainty to 1.1 × 10-18. To determine the frequency shift due to thermal radiation emitted by the ion's environment, we measure the static scalar differential polarizability of the E3 transition as 0.888(16) × 10-40 Jm2/V2 and a dynamic correction η(300 K) = -0.0015(7) . This reduces the uncertainty due to thermal radiation to 1.8 × 10-18. The residual motion of the ion yields the largest contribution (2 .1 × 10-18) to the total systematic relative uncertainty of the clock of 3.2 × 10-18. |
