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Generalized ramsey scheme for precision spectroscopy of ultracold atoms and ions: Inclusion of a finite laser line width and spontaneous relaxation of the atomic levels |
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| Authors: | K S Tabatchikova A V Taichenachev V I Yudin |
| Institution: | 1192. Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 13/3, Novosibirsk, 630090, Russia 2192. Novosibirsk State Technical University, pr. Karla Marksa 20, Novosibirsk, 630073, Russia 3192. Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia 4192. Russian Quantum Center, Skolkovo, Moscow region, 143025, Russia 5192. Research Institute of Physicotechnical and Radio Engineering Measurements, Mendeleevo, Moscow region, 141570, Russia |
| Abstract: | Ramsey schemes with pulses of different lengths and with a composite pulse have been analyzed taking into account a finite width of the laser line and spontaneous relaxation of atomic levels. The optimal parameters of pulses corresponding to the maximum suppression of the excitation-related shift and the maximum resonance amplitude have been found for both schemes. According to the numerical results, spontaneous relaxation of the atomic levels and a finite width of the laser line must be taken into account in the calculation of the optimal parameters of the excitation pulses. The Ramsey scheme with a composite pulse is less sensitive to fluctuations of the Rabi frequency than the scheme with pulses of different lengths. |
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