Light shifts in atomic Bragg diffraction

  title={Light shifts in atomic Bragg diffraction},
  author={Enno Giese and Alexander Friedrich and Sven Abend and Ernst Maria Rasel and Wolfgang P. Schleich},
  journal={Physical Review A},
Bragg diffraction of an atomic wave packet in a retroreflective geometry with two counterpropagating optical lattices exhibits a light shift induced phase. We show that the temporal shape of the light pulse determines the behavior of this phase shift: In contrast to Raman diffraction, Bragg diffraction with Gaussian pulses leads to a significant suppression of the intrinsic phase shift due to a scaling with the third power of the inverse Doppler frequency. However, for box-shaped laser pulses… 

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