Energy shift due to anisotropic black body radiation

ORAL

Abstract

In many applications a source of the black-body radiation (BBR) can be highly anisotropic. This leads to the black-body radiation shift that depends on tensor polarizability and on the projection of the total angular momentum of ions and atoms in a trap. We derived formula for the anisotropic BBR shift and performed numerical calculations of this effect for Ca$^+$ and Yb$^+$ transitions of experimental interest. These ions are used for a design of high-precision atomic clocks, fundamental physics tests such as search for the Lorentz invariance violation and space-time variation of the fundamental constants, and quantum information. Anisotropic BBR shift may be one of the major systematic effects in these experiments.

*This work was supported by U.S. NSF grants and the Australian Research Council

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Authors

  • Sergey Porsev

    • University of Delaware and PNPI
    • University of Delaware
    • University of Delaware and Petersburg Nuclear Physics Institute, Russia

  • Victor Flambaum

    • University of New South Wales
    • University of New South Wales, Sydney, Australia

  • Marianna Safronova

    • Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA
    • University of Delaware
    • University of Delaware, Newark, Delaware
    • University of Delaware and JQI
    • Univ of Delaware
    • University of Delaware, JQI, NIST, and University of Maryland