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Timestamp: 2019-04-22 22:23:39+00:00

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New features of the phenomenon of interference stabilization of Rydberg atoms are found to exist. The main of them are: (i) dynamical stabilization, which means that in case of pulses with a smooth envelope the time-dependent residual probability for an atom to survive in bound states remains almost constant in the middle part of a pulse (at the strongest fields); (ii) existence of the strong-field stabilization of the after-pulse residual probability in case of pulses longer than the classical Kepler period; and (iii) pulsation of the time-dependent Rydberg wave packet formed in the process of photoionization.
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Fig. 1. Raman-type transitions described by Eqs. (1), (2).
Fig. 2. The total residual probability to find an atom in bound states vs. time t (in Kepler periods) for rectangular (blue) and smooth (red) pulses; in both cases ε0 max corresponds to V = 3; the green curve is the envelope (4) of a smooth pulse.
Fig. 3. The time-dependent partial residual probabilities wl vs. time t (in Kepler periods) for l = 0, 2, 4, and 6 (red, blue, green, and yellow), τ = 5tK , and V = 0.2 (a), 0.9 (b), and 3.6 (c).
Fig. 4. The after-pulse residual probability wres (τ) vs. the field-strength parameter V (3) for τ = 0.3tK (red), tK (blue), 5tK (green), and 7tK (purple).
Fig. 6. The average size of the strong-field driven wave packet (red) and the time-dependent rate of ionization (blue).
(5) C nl ( 0 ) = δ n , n 0 δ l , 0 .
(7) w l ( t ) = ∑ n ∣ C nl ( t ) ∣ 2 .

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