Determination of the 5d6s 3D1 state lifetime and blackbody-radiation clock shift in Yb
Abstract
The Stark shift of the ytterbium (Yb) optical clock transition due to room-temperature blackbody radiation is dominated by a static Stark effect, which was recently measured to high accuracy [J. A. Sherman , Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.108.153002 108, 153002 (2012)]. However, room-temperature realization of the clock at 10-18 uncertainty requires a dynamic contribution to this static approximation. This dynamic term largely depends on a single electric dipole matrix element for which theoretically and experimentally derived values disagree significantly. We determine this important matrix element by two independent methods, which yield consistent values. Along with precise radiative lifetimes of 6s6p3P1 and 5d6s3D1, we report the clock shift due to an ideal 300 K blackbody environment to 0.05% precision.
- Publication:
-
Physical Review A
- Pub Date:
- November 2012
- DOI:
- 10.1103/PhysRevA.86.051404
- arXiv:
- arXiv:1208.0552
- Bibcode:
- 2012PhRvA..86e1404B
- Keywords:
-
- 32.60.+i;
- 06.30.Ft;
- 32.70.Cs;
- Zeeman and Stark effects;
- Time and frequency;
- Oscillator strengths lifetimes transition moments;
- Physics - Atomic Physics
- E-Print:
- Phys. Rev. A, 86(5) 051404 (2012)