| Zugriffsnummer | 44933 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Demonstration of 4.8× 10-17 stability at 1s for two independent optical clocks |
| Autor(in); Institution |
Oelker, E.; JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, University of Colorado, USA
B. Hutson, R.; JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, University of Colorado, USA
J. Kennedy, C.; JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, University of Colorado, USA
Sonderhouse, L.; JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, University of Colorado, USA
Bothwell, T.; JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, University of Colorado, USA
Goban, A.; JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, University of Colorado, USA
Kedar, D.; JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, University of Colorado, USA
Sanner, C.; JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, University of Colorado, USA
M. Robinson, J.; JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, University of Colorado, USA
E. Marti, G.; JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, University of Colorado, USA; Department of Molecular and Cellular Physiology, Stanford University, Stanford, CA, USA
G. Matei, D.; Present address: Horia Hulubei National Institute of Physics and Nuclear Engineering, Magurele, ROMANIA
Legero, Thomas; 4.3, Quantenoptik und Längeneinheit, PTB-Braunschweig
Giunta, M.; Menlo Systems GmbH, GERMANY; Max-Planck-Institut für Quantenoptik, GERMANY
Holzwarth, R.; Menlo Systems GmbH, GERMANY; Max-Planck-Institut für Quantenoptik, GERMANY
Riehle, Fritz; 4, Optik, PTB-Braunschweig
Sterr, Uwe; 4.3, Quantenoptik und Längeneinheit, PTB-Braunschweig
Ye, J.; JILA, National Institute of Standards and Technology and University of Colorado, Department of Physics, University of Colorado, USA
|
| Quelle/Jahr | Nature Photonics: 13 (2019), 714 - 719 |
| ISSN | 1749-4885 (PRINT) ; 1749-4893 (ONLINE) |
| DOI | |
| Verlag | London [u.a.]: Nature Publishing Group |
| Zusammenfassung | Optical atomic clocks require local oscillators with exceptional optical coherence owing to the challenge of performing spectroscopy on their ultranarrow-linewidth clock transitions. Advances in laser stabilization have thus enabled rapid progress in clock precision. A new class of ultrastable lasers based on cryogenic silicon reference cavities has recently demonstrated the longest optical coherence times to date. Here we utilize such a local oscillator with two strontium (Sr) optical lattice clocks to achieve an advance in clock stability. Through an anti-synchronous comparison, the fractional instability of both clocks is assessed to be 4.8×10-17/√τ for an averaging time τ (in seconds). Synchronous interrogation enables each clock to average at a rate of 3.5×10 17/√τ, dominated by quantum projection noise, and reach an instability of 6.6 × 10-19 over an hour-long measurement. The ability to resolve sub-10-18-level frequency shifts in such short timescales will affect a wide range of applications for clocks in quantum sensing and fundamental physics. |
Zitierung
Oelker, E., B. Hutson, R., J. Kennedy, C., Sonderhouse, L., Bothwell, T., Goban, A., Kedar, D., Sanner, C., M. Robinson, J., E. Marti, G., G. Matei, D., Legero, T., Giunta, M., Holzwarth, R., Riehle, F., Sterr, U., & Ye, J. (2019). Demonstration of 4.8× 10⁻¹⁷ stability at 1s for two independent optical clocks. Nature Photonics, 13, 714–719. https://doi.org/10.1038/s41566-019-0493-4