| Zugriffsnummer | 49264 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Improved bounds on Lorentz violation from composite pulse Ramsey spectroscopy in a trapped ion |
| Autor(in); Institution | |
| Quelle/Jahr | Nature Communications: 13 (2022), 1 - 6 |
| Artikelnummer | 7314 |
| Availability | [online only] |
| ISSN | 2041-1723 (ONLINE) |
| DOI | |
| URL | |
| Verlag | London: Nature Publishing Group |
| Zusammenfassung | In attempts to unify the four known fundamental forces in a single quantum consistent theory, it is suggested that Lorentz symmetry may be broken at the Planck scale. Here we search for Lorentz violation at the low-energy limit by comparing orthogonally oriented atomic orbitals in a Michelson-Morley-type experiment. We apply a robust radiofrequency composite pulse sequence in the 2F7/2 manifold of an Yb+ ion, extending the coherence time from 200 μs to more than 1 s. In thismanner, we fully exploit the high intrinsic susceptibility of the 2F7/2 state and take advantage of its exceptionally long lifetime. We match the stability of the previous best Lorentz symmetry test nearly an order of magnitude faster and improve the constraints on the symmetry breaking coefficients to the 10−21 level. These results represent the most stringent test of this type of Lorentz violation. The demonstrated method can be further extended to ion Coulomb crystals. |
| Relation | |
| Kostenfreier Zugang | Open Access Gold |
| Rechteinformation | CC BY 4.0 ; Creative Commons Attribution 4.0 License |
| Themenbereich der Metrologie | Zeit und Frequenz |
| Forschungsprojekt | Interne projekte: Ytterbium multi-ion clock spectroscopy Externe: Improved bounds on Lorentz violation from composite pulse Ramsey spectroscopy in a trapped ion |
| Förderinformationen (1) |
Förderername: Deutsche Forschungsgemeinschaft (DFG)
Förderer ID: 0000 0001 2096 9829 Förderprogramm: EXC-2123 QuantumFrontiers Titel der Förderung: Germany’s Excellence Strategy Förderungsnummer: 390837967 |
| Förderinformationen (2) |
Förderername: Deutsche Forschungsgemeinschaft (DFG)
Förderer ID: 0000 0001 2096 9829 Förderer ID Typ: ISNI Förderprogramm: CRC 1227 DQ-mat Förderungsnummer: B03 |