Abstract
Throughout this thesis manuscript, we have analyzed our experimental observations of the dynamics of a BEC in a double-well potential resorting to a two-mode description of the BJJ. We believe that the 2MM is an appropriate description at short times in our elongated double-well geometry. Furthermore, the good agreement of the data with the 2MM predictions, for example to infer the amount of squeezing in our BEC, or the phase diffusion rate, shows how surprisingly well it describes our system.
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Notes
- 1.
Note that in this case, the evolution in the tilted double well may also cause a phase difference.
- 2.
In the least coupled double well where we observed Josephson oscillations, we estimate that the barrier height was 1.5 larger than the chemical potential of the first excited state (including zero-point energy), corresponding to \(\Lambda \approx 12\).
- 3.
Note that we did not see any obvious second frequency component in our data for strong coupling.
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Berrada, T. (2016). Outlook: Bosonic Josephson Junctions Beyond the Two-Mode Approximation. In: Interferometry with Interacting Bose-Einstein Condensates in a Double-Well Potential. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-27233-7_4
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