The pump–probe coupling of matter wave packets to remote lattice states

  title={The pump–probe coupling of matter wave packets to remote lattice states},
  author={Jacob Friis Sherson and Sung Jong Park and Poul L. Pedersen and Nils Winter and Miroslav Gajdacz and Sune Sch{\o}tt Mai and Jan J. Arlt},
  journal={New Journal of Physics},
The coherent manipulation of wave packets is an important tool in many areas of physics. We demonstrate the experimental realization of quasi-free wave packets of ultra-cold atoms bound by an external harmonic trap. The wave packets are produced by modulating the intensity of an optical lattice containing a Bose–Einstein condensate. The evolution of these wave packets is monitored in situ and their six-photon reflection at a band gap is observed. In direct analogy with pump–probe spectroscopy… 

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