• DOI:10.1103/PhysRevLett.109.033603
• Corpus ID: 10085166

Demonstration of a state-insensitive, compensated nanofiber trap.

@article{Goban2012DemonstrationOA,
  title={Demonstration of a state-insensitive, compensated nanofiber trap.},
  author={A. Goban and K. S. Choi and Daniel J. Alton and D. W. Ding and Cl{\'e}ment Lacro{\^u}te and Martin Pototschnig and Tobias Thiele and Nathaniel P. Stern and Harry J. Kimble},
  journal={Physical review letters},
  year={2012},
  volume={109 3},
  pages={
          033603
        }
}

• A. Goban, K. S. Choi, +6 authors H. Kimble
• Published 22 March 2012
• Physics
• Physical review letters

We report the experimental realization of an optical trap that localizes single Cs atoms ≃215  nm from the surface of a dielectric nanofiber. By operating at magic wavelengths for pairs of counterpropagating red- and blue-detuned trapping beams, differential scalar light shifts are eliminated, and vector shifts are suppressed by ≈250. We thereby measure an absorption linewidth Γ/2π=5.7±0.1  MHz for the Cs 6S(1/2), F=4→6P(3/2), F'=5 transition, where Γ0/2π=5.2  MHz in free space. An optical depth d≃66 is observed, corresponding to an optical depth per atom d1≃0.08. These advances provide an important capability for the implementation of functional quantum optical networks and precision atomic spectroscopy near dielectric surfaces.