Chinese Physics Letters

Population Evolution of Rydberg Rubidium Atoms by Half-Cycle Pulses

Guang-Rui Jia, Yuejin Zhao, Xianzhou Zhang, Yu-Fang Liu, Kun Yu

Published Nov 1, 2012• 0 citations

Abstract

Using the B-spline basis set method combined with model potential, the Stark energy level of rubidium atoms in the vicinity of n = 30 is presented. By using a using time-dependent multilevel approach, we calculate the population redistribution of high Rydberg rubidium atoms under the interaction of external time-dependent half-cycle pulses. Our numerical results show that the population of rubidium atoms can be driven to lower or higher n levels with a train of half cycle pulses, the final population distribution of all the l states for the same n is observed after these interactions.

DOI: 10.1088/0256-307x/29/11/113201

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Chinese Physics Letters

Population Evolution of Rydberg Rubidium Atoms by Half-Cycle Pulses

Guang-Rui Jia, Yuejin Zhao, Xianzhou Zhang, Yu-Fang Liu, Kun Yu

Published Nov 1, 2012• 0 citations

Publisher

Abstract

DOI: 10.1088/0256-307x/29/11/113201

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n

levels with a train of half-cycle pulses. Oscillations of the Rydberg population through both

n

levels and

l

levels are observed during these interactions. The approach may have applications in providing an effective mechanism for producing near ground-state atoms from the initially high-Rydberg distributions found in recombining ultracold plasmas such as encountered in the antihydrogen trapping experiments at CERN.

n=50

with

10%

of the population de-excited down to

n<40

as well as up to the continuum. This is a demonstration of a state-independent de-excitation technique applicable to the currently produced state distribution of antihydrogen. The measured population transfer matches well to a model of the process for one-dimensional atoms.