dorsal/arxiv
View SchemaNew experimental and theoretical approach to the 3d D-level lifetimes of 40Ca+
| Authors | A. Kreuter, C. Becher, G. P. T. Lancaster, A. B. Mundt, C. Russo, H. Häffner, C. Roos, W. Hänsel, F. Schmidt-Kaler, R. Blatt, M. S. Safronova |
|---|---|
| Categories | |
| ArXiv ID | physics/0409038 |
| URL | https://arxiv.org/abs/physics/0409038 |
| DOI | 10.1103/PhysRevA.71.032504 |
Abstract
We report measurements of the lifetimes of the 3d $^2$D$_{5/2}$ and 3d $^2$D$_{3/2}$ metastable states of a single laser-cooled $^{40}$Ca$^+$ ion in a linear Paul trap. We introduce a new measurement technique based on high-efficiency quantum state detection after coherent excitation to the D$_{5/2}$ state or incoherent shelving in the D$_{3/2}$ state, and subsequent free, unperturbed spontaneous decay. The result for the natural lifetime of the D$_{5/2}$ state of 1168(9) ms agrees excellently with the most precise published value. The lifetime of the D$_{3/2}$ state is measured with a single ion for the first time and yields 1176(11) ms which improves the statistical uncertainty of previous results by a factor of four. We compare these experimental lifetimes to high-precision ab initio all order calculations and find a very good agreement. These calculations represent an excellent test of high-precision atomic theory and will serve as a benchmark for the study of parity nonconservation in Ba$^+$ which has similar atomic structure.
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"abstract": "We report measurements of the lifetimes of the 3d $^2$D$_{5/2}$ and 3d\n$^2$D$_{3/2}$ metastable states of a single laser-cooled $^{40}$Ca$^+$ ion in a\nlinear Paul trap. We introduce a new measurement technique based on\nhigh-efficiency quantum state detection after coherent excitation to the\nD$_{5/2}$ state or incoherent shelving in the D$_{3/2}$ state, and subsequent\nfree, unperturbed spontaneous decay. The result for the natural lifetime of the\nD$_{5/2}$ state of 1168(9) ms agrees excellently with the most precise\npublished value. The lifetime of the D$_{3/2}$ state is measured with a single\nion for the first time and yields 1176(11) ms which improves the statistical\nuncertainty of previous results by a factor of four. We compare these\nexperimental lifetimes to high-precision ab initio all order calculations and\nfind a very good agreement. These calculations represent an excellent test of\nhigh-precision atomic theory and will serve as a benchmark for the study of\nparity nonconservation in Ba$^+$ which has similar atomic structure.",
"arxiv_id": "physics/0409038",
"authors": [
"A. Kreuter",
"C. Becher",
"G. P. T. Lancaster",
"A. B. Mundt",
"C. Russo",
"H. H\u00e4ffner",
"C. Roos",
"W. H\u00e4nsel",
"F. Schmidt-Kaler",
"R. Blatt",
"M. S. Safronova"
],
"categories": [
"physics.atom-ph",
"quant-ph"
],
"doi": "10.1103/PhysRevA.71.032504",
"title": "New experimental and theoretical approach to the 3d D-level lifetimes of 40Ca+",
"url": "https://arxiv.org/abs/physics/0409038"
},
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