Diabatic Field Ionization of Highly Excited Sodium Atoms

Jeys, T. H.; Foltz, G. W.; Smith, K. A.; Beiting, Edward J.; Kellert, F. G.; Dunning, F. B.; Stebbings, R. F.

doi:10.1103/physrevlett.44.390

Cited by 136 publications

(30 citation statements)

References 6 publications

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“…The result is shown in a doubly logarithmic plot in Fig. 3 for F =4 V/cm (circles) and ically by (53), (55), and (56). As the rate constants M a .…”

Section: Resultsmentioning

confidence: 99%

“…The rather complicated structure of these curves is a consequence of diabatic and adiabatic field ionization (see, e.g., Ref. [53]) owing to the lack of angular-momentum degeneracy in nonhydrogenic Rydberg atoms. Whereas for low-lying n o values an intense and narrow adiabatic peak is dominating the response function, the diabatic contribution to the ionization signal (occurring at higher field strengths) becomes more and more important with rising principal quantum number.…”

Section: B Experimental Results For Coherent and Noisy Microwave Drivementioning

confidence: 99%

“…In this section we solve numerically the master equation (48) in its matrix representations (53) and (55). In order to compare our theory with the experimental results to be described in Sec.…”

Section: Externally Imposed Classical Noisementioning

confidence: 99%

“…In order to compare our theory with the experimental results to be described in Sec. III, the theoretical results for the coherences and populations of quasienergy states, (53) and (55), respectively, have to be transformed back into the atomic basis which yields a ,n, and 0" pm 13717 respectively. On this level, the question arises how to compress the information contained in the set of occupation probabilities 11), in a physically meaningful way.…”

Section: Externally Imposed Classical Noisementioning

confidence: 99%

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Dynamical localization in the microwave interaction of Rydberg atoms: The influence of noise

et al. 1991

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We present experimental and theoretical results on highly excited Rydberg atoms passing through a waveguide. The waveguide is excited in a coherent mode with a superimposed component of technically generated noise. In the theoretical part of the paper we derive and solve a master equation for a Rydberg atom driven by a monochromatic coherent microwave field in the presence of noise. We show that a Rydberg atom subjected to a mixture of coherent modes and noise fields exhibits four dynamical regimes: (i) diffusive broadening, (ii) localization, (iii) destruction of coherence and localization, and (iv) relaxation to equilibrium. The four regimes are passed one after the other as a function of irradiation time. They occur on different time scales and are thus temporally well separated from each other. The theory is checked by an experiment on the time dependence of the population distribution of highly excited rubidium Rydberg atoms initially prepared in a unique and well-defined Rydberg state and irradiated by a strong microwave field. The localization regime, characterized by a "freezing" of the width of the wave packet with respect to the Rydberg levels, has been observed. The addition of a small noise component was shown to lead to delocalization after times inversely proportional to the noise power, as predicted by our theory. PACS number(s): 32.80. Rm, 05.45. +b,

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“…The result is shown in a doubly logarithmic plot in Fig. 3 for F =4 V/cm (circles) and ically by (53), (55), and (56). As the rate constants M a .…”

Section: Resultsmentioning

confidence: 99%

Section: B Experimental Results For Coherent and Noisy Microwave Drivementioning

confidence: 99%

Section: Externally Imposed Classical Noisementioning

confidence: 99%

Section: Externally Imposed Classical Noisementioning

confidence: 99%

See 2 more Smart Citations

Dynamical localization in the microwave interaction of Rydberg atoms: The influence of noise

et al. 1991

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“…Figure 1 shows the results of our calculation of the path to ionization for the 37d 5/2 , |m j | = 1/2, 3/2, and 5/2 in red, blue, and green, respectively. The amplitudes follow multiple branching paths to ionization [43][44][45]. The opacity scale is chosen to highlight the differences between states with populations up to 0.1; states with greater population are more opaque.…”

Section: Modelmentioning

confidence: 99%

Quantum interference in the field ionization of Rydberg atoms

et al. 2015

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We excite ultracold rubidium atoms in a magneto-optical trap to a coherent superposition of the three |m j | sublevels of the 37d 5/2 Rydberg state. After some delay, during which the relative phases of the superposition components can evolve, we apply an electric field pulse to ionize the Rydberg electron and send it to a detector. The electron traverses many avoided crossings in the Stark levels as it ionizes. The net effect of the transitions at these crossings is to mix the amplitudes of the initial superposition into the same final states at ionization. Similar to a Mach-Zehnder interferometer, the three initial superposition components have multiple paths by which they can arrive at ionization and, since the phases of those paths differ, we observe quantum beats as a function of the delay time between excitation and initiation of the ionization pulse. We present a fully quantum-mechanical calculation of the electron's path to ionization and the resulting interference pattern.

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The Stark effect in atomic Rydberg states through a quantum defect approach

Menéndez¹,

Martı́n²,

Velasco³

2005

Int J of Quantum Chemistry

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ABSTRACT:A basis set of quantum defect orbitals (QDOs) has been adopted for the diagonalization of the Hamiltonian matrix of nonhydrogenic atoms in the presence of an external electric field, so that the Stark structure of the Rydberg states has been possible to determine. The presently obtained Stark maps are in excellent agreement with those resulting from theory and experiment, as reported in the literature for a few representative atoms. The adequacy of the Stark quantum defect orbital (SQDO) procedure for accurately dealing with properties related to the Stark effect in atoms is suggested.

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Diabatic Field Ionization of Highly Excited Sodium Atoms

Cited by 136 publications

References 6 publications

Dynamical localization in the microwave interaction of Rydberg atoms: The influence of noise

Dynamical localization in the microwave interaction of Rydberg atoms: The influence of noise

Quantum interference in the field ionization of Rydberg atoms

The Stark effect in atomic Rydberg states through a quantum defect approach

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