Analysis of the light shift in the hyper-Ramsey scheme of two-level atom interrogation in an optically dense medium

Abstract

The properties of the Ramsey resonance and its sensitivity to the light shift of the atomic transition frequency are investigated in the case of the hyper-Ramsey interrogation in an optically dense medium of cold atoms. The shape of the interrogating pulses varies significantly due to the processes of absorption and dispersion in the atomic medium, which leads to a distortion of the Ramsey resonance and a periodic change in the central minimum to the maximum and vice versa. The dependence of the position of the central resonance on the light shift of the atomic transition is found with the attenuation of radiation in the medium taken into account. It is shown that in a certain section of the medium this dependence becomes N-shaped.

Peculiarities of the interaction-induced modifications of the decay of different Zeeman sublevels of an atom excited in isotropic environment

“…It is well understood that local environ ment can significantly change the decay rate of an excited atom. Depending on the properties of the environment, mac roscopic and microscopic approaches are used to describe the interactioninduced change of the decay in a medium [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Macroscopic methods prove the efficiency for a description of such experiments where host atoms of a medium are non resonant to the radiation emitted by an initially excited impu rity atom, and the characteristic distances between host atoms are much smaller then the transition wavelength of the impu rity [19][20][21][22][23][24][25][26].…”

“…Depending on the properties of the environment, mac roscopic and microscopic approaches are used to describe the interactioninduced change of the decay in a medium [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Macroscopic methods prove the efficiency for a description of such experiments where host atoms of a medium are non resonant to the radiation emitted by an initially excited impu rity atom, and the characteristic distances between host atoms are much smaller then the transition wavelength of the impu rity [19][20][21][22][23][24][25][26]. In the opposite case, the discrete structure of the atomic environment and associated interatomic correlations play a key role, and one has to use a microscopic description [15][16][17][18][27][28][29].…”