| Zugriffsnummer | 44934 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Demonstration of a timescale based on a stable optical carrier |
| Autor(in); Institution |
R. Milner, William; JILA, NIST and University of Colorado, USA
M. Robinson, John; JILA, NIST and University of Colorado, USA
J. Kennedy, Colin; JILA, NIST and University of Colorado, USA
Bothwell, Tobias; JILA, NIST and University of Colorado, USA
Kedar, Dhruv; JILA, NIST and University of Colorado, USA
Matei, Dan G.; PTB-Braunschweig, formerly
Legero, Thomas; 4.3, Quantenoptik und Längeneinheit, PTB-Braunschweig
Sterr, Uwe; 4.3, Quantenoptik und Längeneinheit, PTB-Braunschweig
Riehle, Fritz; 4, Optik, PTB-Braunschweig
Leopardi, Holly; National Institute of Standards and Technology, USA
M. Fortier, Tara; National Institute of Standards and Technology, USA
A. Sherman, Jeffrey; National Institute of Standards and Technology, USA
Levine, Judah; National Institute of Standards and Technology, USA
Yao, Jian; National Institute of Standards and Technology, USA
Ye, Jun; JILA, NIST and University of Colorado, USA
Oelker, Eric; JILA, NIST and University of Colorado, USA
|
| Quelle/Jahr | Physical Review Letters: 123 (2019), 17, 1 - 6 |
| Artikelnummer | 173201 |
| ISSN | 0031-9007 (PRINT) ; 1079-7114 (ONLINE) |
| DOI | |
| Verlag | Ridge, NY: American Physical Society (APS) |
| Zusammenfassung | We report on the first timescale based entirely on optical technology. Existing timescales, including those incorporating optical frequency standards, rely exclusively on microwave local oscillators owing to the lack of an optical oscillator with the required frequency predictability and stability for reliable steering. We combine a cryogenic silicon cavity exhibiting improved long-term stability and an accurate 87Sr lattice clock to form a timescale that outperforms them all. Our timescale accumulates an estimated time error of only 48±94 ps over 34 days of operation. Our analysis indicates that this timescale is capable of reaching a stability below 1 × 10-17 after a few months of averaging, making timekeeping at the 10-18 level a realistic prospect. |
Zitierung
R. Milner, W., M. Robinson, J., J. Kennedy, C., Bothwell, T., Kedar, D., Matei, D. G., Legero, T., Sterr, U., Riehle, F., Leopardi, H., M. Fortier, T., A. Sherman, J., Levine, J., Yao, J., Ye, J., & Oelker, E. (2019). Demonstration of a timescale based on a stable optical carrier. Physical Review Letters, 123(17), 1–6. https://doi.org/10.1103/physrevlett.123.173201