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The European Physical Journal D

Entanglement properties of atoms in the Kerr-nonlinear blackbody

Qinfeng Xu, Xia Hui, Jinjun Chen, Ze Cheng

Published Apr 1, 2012• 8 citations
Publisher
DOI
10.1140/epjd/e2012-20636-1

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We investigate the dynamic Stark shift and atomic depopulation rate induced by real photons in a Kerr nonlinear blackbody. We found that the dynamic Stark shift and atomic depopulation rate are equally modified by a nonlinear contribution factor and a linear contribution factor under a transition temperature Tc. The nonlinear contribution factor depends on the Kerr nonlinear coefficient as well as the absolute temperature. Below Tc, the absolute values of the dynamic Stark shift and depopulation rate of a single atomic state (not the ground state) are correspondingly larger than those in a normal blackbody whose interior is filled with a nonabsorbing linear medium. Above Tc, the dynamic Stark shift and atomic depopulation rate are correspondingly equal to those in a normal blackbody with a nonabsorbing linear medium in its interior.