Observation of the S01→P03 clock transition in Al+27

摘要: We report, for the first time, laser spectroscopy of {sup 1}S{sub 0}{yields}{sup 3}P{sub 0} clock transition in 27}Al{sup +}. A single aluminum ion and a beryllium are simultaneously confined linear Paul trap, coupled by their mutual Coulomb repulsion. This coupling allows to sympathetically cool also enables transfer aluminum's electronic state beryllium's hyperfine state, which can be measured with high fidelity. These techniques applied measure frequency {nu}=1 121 015 393 207 851(6) Hz. They used lifetime metastable {tau}=20.6{+-}1.4 s, ground g factor g{sub S}=-0.000 792 48(14), excited P}=-0.001 976 86(21), units Bohr magneton.