Diffraction phases in atom interferometers
Résumé
Diffraction of atoms by laser is a very important tool for matterwave optics. Although this process is well understood, the phaseshifts induced by this diffraction process are not well known. Inthis paper, we make analytic calculations of these phase shifts insome simple cases and we use these results to model the contrastinterferometer recently built by the group of D. Pritchard at MIT.We thus show that the values of the diffraction phases are largeand that they probably contribute to the phase noise observed inthis experiment.
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