{"id":767,"date":"2019-09-27T10:06:07","date_gmt":"2019-09-27T07:06:07","guid":{"rendered":"https:\/\/phsites.technion.ac.il\/sagi\/?page_id=767"},"modified":"2020-08-16T15:25:16","modified_gmt":"2020-08-16T12:25:16","slug":"raman-spectroscopy-of-degenerate-fermi-gases","status":"publish","type":"page","link":"https:\/\/phsites.technion.ac.il\/sagi\/system\/raman-spectroscopy-of-degenerate-fermi-gases\/","title":{"rendered":"Raman spectroscopy of degenerate Fermi gases"},"content":{"rendered":"\n

We have devloped a new probing technique to study quantum gases which is based on Raman spectroscopy. In a Raman process, an atom absorbs and emits photons from two laser beams whose frequency, and orientation can be adjusted. In a Raman process, there is a momentum transfer between the photons and the atom, and it depends on the angle between the Raman beams. Since the process has to conserve energy and momentum, it means only atoms with specific energies and momenta can undergo this process, for a given set of Raman beams parameters. By scanning these parameters and recording the number of atoms transferred in the Raman process, it is possible to learn a great deal about the energy-momentum distribution of the atoms. This, in turn, tells us a lot about the many-body quantum phase of the gas. <\/p>\n

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The blue arrows are the Raman beams. The yellow oval shape represents the atomic cloud, which is trapped in a far detuned optical dipole trap (red lines). The interactions between the atoms can be tuned by changing the applied magnetic field, B.<\/figcaption><\/figure>\n

Raman spectroscopy<\/a><\/p>\n

Related publications:<\/p>\n