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Descrição
The main goal of this project is to study the synchronization of matter waves and the cooling potential of cold atomic clouds undergoing Bloch oscillations in an optical ring cavity, a setup which can be used as a gravity sensor. (1) While the proof-of-principle of the gravimeter concept has been demonstrated recently, investigating these phenomena will require the development of new analytical and numerical tools. In particular, parallel computation schemes will be particularly important to explore large timescales, which in turn allows studying the long-term stability of the gravimeter (and thus the precision of the sensing). The precise measurement of the gravitational field has important applications in various fields as it provides information on the composition of the environment, having important consequences in the field of oil prospection if drilling could be substituted by a non-invasive measurement. The first experiments of cold atomic clouds undergoing Bloch oscillations date back to the 90’s and less than 10 years later the first measurements of gravity by that means were realized. (2) However, these experiments possessed the significant disadvantage of relying on a destructive measurement of the atomic cloud momentum, such that thousands of realizations have to be realized in order to produce a measurement with high precision. A potential solution to these issues was proposed recently by the collaborators of this project (1) based on the idea of using a ring cavity to harness continuously the light pulses resulting from the Bloch oscillations. This continuous measurement relies on a single realization, eliminating problems of fluctuations from shot to shot and reducing drastically the integration time.
Referências
1 SAMOYLOVA, M. et al. Synchronization of Bloch oscillations by a ring cavity. Optics Express, v. 23, n. 11, p. 14823-14835, 2015.
2 FERRARI, G. et al. Long-lived Bloch oscillations with bosonic Sr atoms and application to gravity measurement at the micrometer scale. Physical Review Letters, v. 97, n. 6, p. 060402-1-060402-4, 2006.
| Subárea | Óptica e Lasers |
|---|---|
| Apresentação do trabalho acadêmico para o público geral | Não |
