Differential Light-Shift Cancellation in a Magnetic-Field-Insensitive Transition of Rb87

R. Chicireanu, K. D. Nelson, S. Olmschenk, N. Lundblad, A. Derevianko, and J. V. Porto
Phys. Rev. Lett. 106, 063002 – Published 8 February 2011


The precise measurement of transition frequencies of trapped atomic samples is susceptible to inaccuracy arising from the inhomogeneous differential shift of the relevant energy levels in the presence of the trapping fields. We demonstrate near-complete cancellation of the differential ac Stark shift (“light shift”) of a two-photon magnetic-field-insensitive microwave hyperfine (clock) transition in Rb87 atoms trapped in an optical lattice. Up to 95(2)% of the differential light shift is cancelled while maintaining magnetic-field insensitivity. This technique should have applications in quantum information and frequency metrology.

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  • Received 7 October 2010


© 2011 American Physical Society

Authors & Affiliations

R. Chicireanu1,*, K. D. Nelson1, S. Olmschenk1, N. Lundblad2, A. Derevianko3, and J. V. Porto1

  • 1Joint Quantum Institute, NIST and University of Maryland, Gaithersburg, Maryland 20899, USA
  • 2Department of Physics and Astronomy, Bates College, Lewiston, Maine 04240, USA
  • 3Department of Physics, University of Nevada, Reno, Nevada 89557, USA

  • *rchicireanu@gmail.com

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Vol. 106, Iss. 6 — 11 February 2011

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