Electric Rydberg-Atom Interferometry.

@article{Palmer2019ElectricRI,
  title={Electric Rydberg-Atom Interferometry.},
  author={J. E. Palmer and S. D. Hogan},
  journal={Physical review letters},
  year={2019},
  volume={122 25},
  pages={
          250404
        }
}
An electric analogue of the longitudinal Stern-Gerlach matter-wave interferometer has been realized for atoms in Rydberg states with high principal quantum number n. The experiments were performed with He atoms prepared in coherent superpositions of the n=55 and n=56 circular Rydberg states in a zero electric field by a π/2 pulse of resonant microwave radiation. These atoms were subjected to a pulsed inhomogeneous electric field to generate a superposition of momentum states before a π pulse… 

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