| Zugriffsnummer | 43019 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Robust optical clock transitions in trapped ions using dynamical decoupling |
| Autor(in); Institution |
Aharon, Netanel; Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem, ISRAEL
Spethmann, Nicolas; QUEST Institute for Experimental Quantum Metrology, PTB-Braunschweig
Leroux, Ian D.; PTB-Braunschweig, formerly
Schmidt, Piet O.; QUEST Institute for Experimental Quantum Metrology, PTB-Braunschweig; Leibniz Universität Hannover, Institut für Quantenoptik, Hannover, GERMANY
Retzker, Alex; Racah Institute of Physics, The Hebrew University of Jerusalem, Givet Ram, Jerusalem, Jerusalem, ISRAEL
|
| Quelle/Jahr | New Journal of Physics: 21 (2019), 1 - 17 |
| Artikelnummer | 083040 |
| Availability | [online only] |
| ISSN | 1367-2630 |
| DOI | |
| Verlag | London: IOP Publishing |
| Freie Schlagworte | Optical Clocks ; Trapped Ions ; Spherically symmetric Coulomb Crystal ; Al+ Clock ; multi-ion optical clocks ; dynamical decoupling |
| Zusammenfassung | We present a novel method for engineering an optical clock transition that is robust against external fieldfluctuations and is able to overcome limits resulting from field inhomogeneities. The technique is based on theapplication of continuous driving fields to form a pair of dressed states essentially free of all relevant shifts. Specifically, the clock transition is robust to magnetic field shifts, quadrupole and other tensor shifts, and am-plitude fluctuations of the driving fields. The scheme is applicable to either a single ion or an ensemble ofions, and is relevant for several types of ions, such as 40Ca+, 88 Sr+, 138Ba+ and 176Lu+. Taking a sphericallysymmetric Coulomb crystal formed by 400 40Ca+ ions as an example, we show through numerical simulationsthat the inhomogeneous linewidth of tens of Hertz in such a crystal together with linear Zeeman shifts of order 10 MHz are reduced to form a linewidth of around 1 Hz. We estimate a two-order-of-magnitude reduction inaveraging time compared to state-of-the art single ion frequency references, assuming a probe laser fractionalinstability of 10-15. Furthermore, a statistical uncertainty reaching 2.9×10-16 in 1 s is estimated for a cascadedclock scheme in which the dynamically decoupled Coulomb crystal clock stabilizes the interrogation laser for an 27Al+ clock. |
| Kostenfreier Zugang | Open Access Gold |
| Rechteinformation | CC BY 3.0 ; Creative Commons Attribution 3.0 License |
| Themenbereich der Metrologie | Zeit und Frequenz |