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Bachelor Thesis

Here you will find some additional graphics and animations, which serve as a supplement to my bachelor thesis. My bachelor thesis itself can be downloaded below:

Bachlor Thesis download:

3D Model of the Experiment

Here you can view the experimental set-up from all sides using an animation. You can also interactively examine the experiment yourself with the help of a 3D model.

Time evolution of Dy with dipolar relaxation

By using radio frequencies, the individual sublevels of dysprosium are coupled to each other and transitions are excited. As soon as the dysprosium atoms are no longer in the ground state, losses occur due to dipolar relaxation. This is reflected in the probability of finding an atom in a specific state.

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Transformations of the magnetic field

With the help of an RF coil, the magnetic field in our 3D MOT could be measured very precisely. As expected, we obtained a linear relationship between coil current and magnetic field strength. From these results, transformations of the magnetic field could now be converted into current strengths.

Isolation of a two level system

With the help of the AC Stark effect, a two-state system is to be isolated at the resonance of dysprosium at λ=657.973 nm using σ- polarised light. As criteria for a successful isolation we define an energy isolation of at least 30 kHz compared to other transitions and a lifetime of at least 1s, so that there is enough time to modify and investigate the two-state system. In order to be able to investigate the stability of this two-state system, we define a polarisation imperfection parameter x, which modifies the polarisation P=(1-x, -(1+x) i, 0).

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