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arXiv · 1410.7152

Application of the weak-measurement technique to study atom-vacuum interactions

M. Zhang·S. Y. Zhu
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Abstract

Quantum weak measurement has attracted much interest recently [J. Dressel et al., Rev. Mod. Phys. 86, 307 (2014)] because it could amplify some weak signals and provide a technique to observe nonclassical phenomena. Here, we apply this technique to study the interaction between the free atoms and the vacuum in a cavity. Due to the gradient field in the vacuum cavity, the external orbital motions and the internal electronic states of atoms can be weakly coupled via the atom-field electric-dipole interaction. We show that, within the properly postselected internal states, the weak atom-vacuum interaction could generate a large change to the external motions of atoms due to the postselection-induced weak values.

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M. Zhang, S. Y. Zhu. 2015-10-28. Application of the weak-measurement technique to study atom-vacuum interactions. https://doi.org/10.1103/physreva.92.043825

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