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Photon recoil momentum in dispersive media

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arxiv cond-mat/0502014 v1 pith:BZEMBXK6 submitted 2005-02-01 cond-mat.other

Photon recoil momentum in dispersive media

Gretchen K. Campbell , Aaron E. Leanhardt , Jongchul Mun , Micah Boyd , Erik W. Streed , Wolfgang Ketterle , David E. Pritchard This is my paper
classification cond-mat.other
keywords photonrecoillightatomsindexmomentumrefractionsystematic
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A systematic shift of the photon recoil due to the index of refraction of a dilute gas of atoms has been observed. The recoil frequency was determined with a two-pulse light grating interferometer using near-resonant laser light. The results show that the recoil momentum of atoms caused by the absorption of a photon is n\hbar k, where n is the index of refraction of the gas and k is the vacuum wavevector of the photon. This systematic effect must be accounted for in high-precision atom interferometry with light gratings.

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