Direct Excitation of the Forbidden Clock Transition in NeutralAtoms Confined to an Optical Lattice
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- 1 March 2006
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 96 (8) , 083002
- https://doi.org/10.1103/physrevlett.96.083002
Abstract
We report direct single-laser excitation of the strictly forbidden clock transition in atoms confined to a 1D optical lattice. A small () static magnetic field was used to induce a nonzero electric dipole transition probability between the clock states at 578.42 nm. Narrow resonance linewidths of 20 Hz (FWHM) with high contrast were observed, demonstrating a resonance quality factor of . The previously unknown ac Stark shift-canceling (magic) wavelength was determined to be . This method for using the metrologically superior even isotope can be easily implemented in current Yb and Sr lattice clocks and can create new clock possibilities in other alkaline-earth-like atoms such as Mg and Ca.Keywords
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