Spatial Characterization Of Two-Photon States - GAP-Optique
Spatial Characterization Of Two-Photon States - GAP-Optique
Spatial Characterization Of Two-Photon States - GAP-Optique
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Introduction<br />
the transfer of oam from the generating pump beam to the down-converted<br />
photons. Several studies have reported a compleate transfer of the oam of the<br />
pump [7, 8, 22, 27, 28, 29], while other studies have reported a partial transfer<br />
[30, 31, 32, 33]. The elucidation of the oam spectra of down-converted photons,<br />
and their relation with the spectra of the pump, is a key step for developing<br />
new applications based on this degree of freedom.<br />
This thesis addresses the mentioned oam controversy, as well as the characterization<br />
of the different correlations present in two-photon states. For both<br />
processes, spdc and Raman transitions in cold atoms, this thesis describes the<br />
generated two-photon state, the correlations between different degrees of freedom<br />
and between photons, and the oam transfer. A general goal of the thesis<br />
is to contribute to the characterization of the two-photon sources, making it<br />
possible to exploit a bigger portion of the total quantum state of the light in<br />
future applications.<br />
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